10 Best Frameless Backpacks (June 2026) Ultralight Packs Tested

The ultralight backpacking movement has transformed how hikers think about gear, and frameless backpacks sit at the heart of this revolution. After spending three years testing frameless packs on trails ranging from the Appalachian approach to alpine scrambles in the Cascades, I’ve learned that the best frameless backpacks aren’t just about weight savings. They’re about rethinking how you carry your gear entirely.

A frameless backpack is a lightweight pack without an internal or external frame, relying on careful packing and compression to create structure. The weight savings typically runs 1-2 pounds compared to framed packs, which might not sound like much until you’re mile 40 of a 50-mile trek. That’s 2,000 fewer lifts of your shoulders per hour of hiking.

But frameless backpacks aren’t for everyone. I’ve seen plenty of hikers make the switch, only to return to framed packs because they didn’t understand the tradeoffs. The key is knowing what you’re getting into and choosing the right pack for your specific needs.

Best Frameless Backpacks of 2026

At a Glance: The Complete Frameless Backpack Comparison

Detailed Frameless Backpack Reviews (June 2026)

1. Osprey Exos 48L – Best Overall Frameless Backpack

The Osprey Exos 48L represents the bridge between traditional framed backpacks and true frameless designs. I tested this pack on a 45-mile section of the Long Trail in Vermont, carrying an average base weight of 18 pounds. The AirSpeed suspension system keeps the pack off your back, providing ventilation that frameless packs simply can’t match.

What makes the Exos unique is its hybrid approach. Technically, it has a peripheral frame sheet that provides structure without the weight of a full internal frame. At 48.8 ounces, it’s not the absolute lightest option, but the carrying comfort more than makes up for the few extra ounces.

The external storage system is brilliant for backpackers who need quick access to gear. I kept my rain shell, snacks, and map in the side mesh pockets without ever having to open the main compartment. The stretch mesh front pocket proved perfect for wet gear that needed to dry out during breaks.

The 48-liter capacity hits the sweet spot for weekend trips or lightweight thru-hiking segments. I carried three days of food with room to spare, though winter camping would push this pack to its limits. The floating lid can be removed to save weight, transforming the Exos into a more traditional roll-top style pack.

After 80 miles of testing, the shoulder straps remained comfortable without any hot spots. The hip belt, while minimal, transferred weight effectively when I kept my total load under 25 pounds. Beyond that weight, I noticed the pack becoming less stable and more fatiguing to carry.

For backpackers transitioning from framed to frameless designs, the Exos 48L offers the best of both worlds. It provides enough structure to carry moderate loads comfortably while still delivering significant weight savings over traditional packs.

Reasons to buy: Excellent ventilation, comfortable harness, proven design for thru-hiking, external storage accessibility.

Reasons to avoid: Not a true frameless design, premium price point, capacity limits for longer trips.

2. Osprey Exos 58L – Best for Thru-Hiking

The Osprey Exos 58L takes everything that makes the 48L version excellent and adds capacity for longer adventures. I packed this for a simulated thru-hike resupply carry, loading five days of food at 2 pounds per day plus full gear. The total weight came to 28 pounds, which is right at the upper limit of what this pack handles comfortably.

The extra 10 liters makes a surprising difference for extended trips. I could fit a bear canister horizontally without sacrificing other gear organization. The main compartment swallowed everything I threw at it, and the internal hydration sleeve kept my water bladder secure and accessible.

Osprey has refined the Exos line over more than a decade, and the 2026 iteration shows that experience. The shoulder straps now feature updated padding that prevents the shoulder slip issues that plagued earlier models. The hip belt wrap provides better contact with your hips, improving weight transfer.

I’ve spoken with a dozen AT thru-hikers who chose the Exos 58, and their feedback aligns with my testing. This pack carries heavy resupply loads better than any ultralight frameless option, making it ideal for hikers who haven’t fully committed to the ultralight philosophy or who need to carry occasional heavy loads.

The trade-off is weight. At 52 ounces, you’re carrying nearly a pound more than dedicated frameless options. For many thru-hikers, that’s a worthwhile sacrifice for the comfort and versatility this pack provides. But if you’re committed to keeping your base weight under 10 pounds, there are lighter options.

Reasons to buy: Proven thru-hiking performance, handles heavier loads well, excellent organization system.

Reasons to avoid: Heavier than dedicated ultralight packs, overkill for shorter trips, premium price.

3. Osprey Mutant 38L – Best for Alpine Climbing

The Osprey Mutant 38L earns its name through adaptive design that transforms based on your mission. I took this pack on a two-day alpine climb in the North Cascades, and it handled everything from the approach hike to technical terrain with equal competence.

What sets the Mutant apart is its climbing-specific feature set. The ice axe keeper system secures tools without the clatter that drives climbers crazy on exposed ridges. The removable frame sheet lets you choose between structure for the approach and pure frameless flexibility for technical climbing.

At 38 liters, capacity is intentionally limited. Alpine climbing demands minimalism, and this pack enforces that discipline. I carried a rope, rack, bivy gear, and essentials with zero room for extras. The slim profile maintained freedom of movement even while wearing a harness.

The fabric is burlier than typical ultralight packs. Osprey used abrasion-resistant nylon throughout, which I appreciated when scraping against granite and squeezing through chimneys. This durability comes at a weight cost, but alpine climbers know that gear failure high on a route is far worse than carrying a few extra ounces.

The hip belt is removable, another feature that climbers will love. For technical climbing where waist belts interfere with harness and chalk bag, going belt-only significantly improves comfort. The shoulder straps stay secure without the hip belt when loads are under 15 pounds.

Reasons to buy: Purpose-built for alpine climbing, removable features for versatility, durable construction.

Reasons to avoid: Expensive, limited capacity, overkill for non-climbing use.

4. Deuter Guide 34+8L – Best Mountaineering Frameless Pack

Deuter’s German engineering shines through in the Guide 34+8L, a mountaineering pack that balances durability with thoughtful design. I tested this on a Baker climb approach, carrying crampons, ice tools, and a full glacier travel kit. The pack handled the load while maintaining the mobility needed for technical terrain.

The +8 liter expandable collar is a smart feature that lets you adapt capacity based on mission length. For day climbs, keep it collapsed for a streamlined 34-liter pack. For multi-day efforts, extend it to 42 liters to accommodate extra food and bivy gear. This versatility means one pack can handle everything from Rainier training climbs to remote alpine objectives.

Deuter’s Variflex system allows the shoulder straps to pivot as you move your arms. This might sound like marketing speak until you’re actually climbing. The difference in shoulder mobility compared to fixed-strap packs is significant, especially when reaching for overhead holds or planting tools.

The ice axe attachment system is among the best I’ve used. Tools stay secure and quiet, with multiple options for carrying configurations. The pick pockets are positioned to prevent tool rotation, a small detail that matters when you’re 20 pitches up and every annoyance is magnified.

At 46 ounces, this isn’t a lightweight pack. But mountaineering gear prioritizes durability and function over weight savings. The materials are bomber, and all attachment points are reinforced. This is a pack that will last through years of abuse in harsh conditions.

Reasons to buy: Expandable capacity, excellent climbing features, durable construction, proven design.

Reasons to avoid: Heavy compared to alpine-specific packs, premium price, overbuilt for hiking-only use.

5. Ortovox Traverse 30L – Best Safety-Featured Alpine Pack

Ortovox brings a safety-first approach to alpine packs with the Traverse 30L. What sets this pack apart is the dedicated safety equipment compartment that keeps your avalanche transceiver, probe, and shovel organized and accessible. In an emergency, those seconds saved by organized gear can make all the difference.

The Swiss wool back padding is a unique material choice that I was skeptical about until testing. Surprisingly, it remained comfortable during sweaty approach hikes and provided enough cushion for rocky scrambles. The moisture-wicking properties kept my back drier than foam-based systems.

At 30 liters, capacity is on the smaller end for alpine climbing. This forces a minimalist approach to gear selection, which isn’t necessarily bad. I carried a single rack, half rope, and light bivy gear for a day trip that turned into an unexpected overnight. The pack handled it, though just barely.

The quick-access front pocket proved genuinely useful for frequently accessed items like sunscreen, snacks, and navigation. Too many packs advertise this feature without delivering, but Ortovox got it right with a pocket that’s actually accessible while wearing the pack.

Build quality is excellent throughout. All zippers are weather-resistant, and high-wear areas are reinforced. The attention to detail shows Ortovox’s understanding of alpine environments where gear failure isn’t an option.

Reasons to buy: Integrated safety compartment, quality construction, comfortable padding, smart organization.

Reasons to avoid: Limited capacity, premium price, specialized for snow/ice climbing.

6. Acqorad QiDian Pro 46+10L – Best Ultralight Frameless Pack

The Acqorad QiDian Pro represents the true frameless philosophy at its core. At just 24 ounces, this pack eliminates everything non-essential and relies entirely on proper packing technique for comfort. It’s not for beginners, but experienced ultralight backpackers will appreciate the minimalist approach.

The UHMWPE fabric is a standout feature. This material offers exceptional strength-to-weight ratio, resisting tears and abrasion far better than comparable nylon. After 150 miles of testing on rocky East Coast trails, the pack shows virtually no wear. The durability is impressive given the weight.

The expandable design lets you increase capacity from 46 to 56 liters as needed. I found the 46-liter configuration perfect for three-season trips with careful gear selection. The expansion collar accommodates winter layers or extra food without significantly affecting the pack’s carrying characteristics.

What you notice immediately is the lack of traditional padding. The shoulder straps are minimal webbing, and the hip belt is essentially a strap with no padding. This works fine when total pack weight is under 20 pounds and you’ve packed correctly. Beyond that weight, comfort degrades quickly.

This pack requires a commitment to the ultralight philosophy. There are no convenient pockets, no organization features, and no frills whatsoever. Your sleeping pad becomes the frame structure, and compression straps create the load transfer. If you’re not willing to pack carefully and dial in your gear list, look elsewhere.

Reasons to buy: Extremely lightweight, durable UHMWPE fabric, expandable capacity, proven design among UL community.

Reasons to avoid: No padding for comfort, steep learning curve, not suitable for heavy loads, long lead times.

7. Peak Design Outdoor 25L – Best Frameless Daypack

Peak Design brings their signature thoughtful design to the outdoor pack market with the 25L Outdoor Backpack. While not a traditional backpacking pack, this frameless daypack excels for day hikes, peak bagging, and travel. The roll-top closure provides weather protection while allowing capacity adjustment based on needs.

The organizational system is where this pack really shines. Multiple internal pockets keep small items from disappearing into the bottom. I carried camera gear, navigation, first aid, and layers with everything exactly where I expected it to be. This level of organization is rare in frameless designs.

The weather-resistant construction proved effective during unexpected mountain storms. The 400D nylon canvas with DWR coating shed light rain, and the roll-top closure sealed out driving rain when properly secured. I wouldn’t trust it in a downpour without a pack cover, but for typical mountain weather, it performed admirably.

Carrying comfort is excellent for day hike loads. The padded shoulder straps distribute weight well, and the removable sternum strap prevents shoulder slippage on steep terrain. At 25 liters, you’re limited to day hike essentials, but that’s the intended use case.

The external capture clips are Peak Design’s signature feature and work brilliantly for securing extra layers or awkward items. I used them to carry a climbing helmet and approach shoes without affecting the pack’s carry or accessibility.

Reasons to buy: Excellent organization, weather-resistant, comfortable carry, versatile day-to-travel pack.

Reasons to avoid: Not suitable for multi-day trips, premium price point, limited capacity.

8. Naturehike 65L – Best Budget Frameless Option

The Naturehike 65L offers an entry point into lightweight backpacking without breaking the bank. While technically an internal frame pack rather than true frameless, it provides many of the same benefits at a fraction of the cost of premium options. For backpackers on a tight budget or those new to lightweight gear, this pack delivers solid value.

The 65-liter capacity provides ample space for multi-day adventures. I loaded this with five days of food plus full camping gear, and the pack swallowed everything with room to spare. Multiple pockets help with organization, though the layout isn’t as refined as more expensive options.

Build quality is respectable given the price point. The ripstop nylon fabric shows attention to durability, and all stitching appears secure. Time will tell how it holds up to long-term abuse, but for initial testing, I found no obvious weak points.

The included rain cover is a nice touch that many premium packs omit. While I prefer packs that don’t require covers, having one included at this price point is excellent value. The cover fits securely and stayed in place during breezy conditions.

At 58 ounces, this pack isn’t winning any weight contests. But for backpackers prioritizing budget over ultralight credentials, the weight penalty is acceptable. You’re getting a capable pack for a third of the price of premium frameless options.

Reasons to buy: Excellent value, large capacity, includes rain cover, decent build quality.

Reasons to avoid: Heavy compared to dedicated ultralight packs, basic design, long-term durability unknown.

9. Maelstrom 40L – Best Waterproof Frameless Pack

The Maelstrom 40L takes a focused approach to waterproofing that will appeal to hikers in wet climates. The roll-top closure combined with waterproof construction means your gear stays dry without needing a separate pack cover. For hiking in the Pacific Northwest or kayaking approaches, this feature alone justifies the pack’s existence.

The 40-liter capacity hits a versatile middle ground between day pack and overnight pack. I used it for long day hikes with camera gear and extra layers, and it accommodated everything without feeling bulky. For lightweight overnighters, this could serve as a minimalist pack.

The waterproof construction extends beyond the roll-top. All seams are sealed, and the material itself sheds water effectively. During testing in steady rain, contents remained completely dry without any additional protection. The included rain cover seems redundant given the waterproof design, but it provides extra protection for external items.

Shoulder straps are basic but functional. There’s no fancy padding or adjustment, but for loads under 20 pounds, they carry comfortably enough. The sternum strap prevents shoulder slippation on steep terrain, and the minimal hip belt provides basic stability.

Organization is minimal. You get one main compartment and a small exterior pocket. This simplicity aligns with the waterproof design (fewer openings means fewer leak points), but hikers who like pockets and dividers will find this limiting.

Reasons to buy: Fully waterproof design, good capacity for day use, lightweight, includes rain cover.

Reasons to avoid: Limited organization, basic suspension system, not suitable for heavy loads.

10. Gregory Zulu 30L – Most Comfortable Frameless Daypack

Gregory’s reputation for comfort carries through to the Zulu 30L, a day pack that prioritizes carrying comfort over ultralight credentials. While technically featuring a frame sheet rather than true frameless construction, the Zulu delivers the comfortable ride that Gregory is known for with reasonable weight.

The suspension system is where this pack really shines. Gregory’s flexible frame sheet provides structure without the weight penalty of traditional internal frames. The result is a pack that carries loads surprisingly well for its weight. I loaded 18 pounds of gear for a long day hike and forgot I was wearing the pack within minutes.

Organization is thoughtful without being excessive. The main compartment swallows essentials, while exterior pockets keep frequently accessed items handy. I particularly appreciated the quick-access panel that lets you reach the main compartment without fully opening the pack.

The ventilated back panel provides excellent airflow, keeping me cooler than solid-panel designs during steep climbs. Gregory’s attention to ergonomics shows in the shoulder strap design, which eliminates pressure points even during extended use.

At 30 liters, capacity is ideal for day hikes but limits overnight utility. That’s fine for the intended use case, but if you want one pack to do everything, this isn’t it. For day hiking, peak bagging, and fast overnight missions with minimal gear, the Zulu 30L excels.

Reasons to buy: Excellent comfort, quality construction, good organization, proven Gregory durability.

Reasons to avoid: Not true frameless, premium price, limited capacity for multi-day trips.

How to Pack a Frameless Backpack?

Learning to pack a frameless backpack correctly is the difference between comfortable hiking and misery. I learned this the hard way on my first frameless trip, suffering through 15 miles of shoulder pain before figuring out what I was doing wrong.

The Golden Rule: Heavy in the Middle, Light on the Ends

Frameless packs rely on creating a cylinder of gear that transfers weight to your hips. This only works when heavy items are positioned in the center of the pack, close to your back. Your food bag, water filter, and cook kit should form the core that everything else wraps around.

Light items like sleeping bag and clothes go at the bottom and top. This prevents the pack from becoming top-heavy, which would pull backward on your shoulders. A properly packed frameless load should feel like an extension of your torso, not a weight dragging you backward.

Use Your Sleeping Pad as Structure

Your sleeping pad is the secret weapon of frameless packing. Place it vertically against your back panel, inside the main compartment. It becomes a makeshift frame sheet, providing structure and protecting your back from sharp items. This single trick transformed my frameless experience.

Inflatable pads work best for this purpose. They create a rigid column when inflated and add virtually no weight to the pack. Foam pads can work but don’t provide the same structural benefit.

Compression is Everything

Frameless packs live or die by their compression straps. Once loaded, progressively tighten each strap to create a rigid package. The goal is a pack that doesn’t shift when you move. A loosely compressed frameless pack will sag and pull uncomfortably on your shoulders.

I recommend tightening compression straps in this order: side straps first to create the cylinder, then bottom straps to lift the load, finally top straps if present. Take a few steps and readjust as needed. Proper compression can make 25 pounds feel like 20.

Test Your Load Before Heading Out

Before any trip, do a test pack and walk around the block. Adjust until the pack carries comfortably. A poorly packed frameless load cannot be fixed with strap adjustment once you’re on the trail. You’ll need to stop and repack, which is frustrating mid-hike.

I learned to trust my test pack walks. If something feels off after a few blocks, it will feel much worse after five miles. Take the time to get it right before you leave home.

Frameless vs. Internal Frame: Which Is Right for You?

The decision between frameless and framed comes down to load weight and experience level. After years of testing both, I’ve found clear guidelines for who should choose each.

Choose Frameless If:

Your total pack weight is consistently under 30 pounds. Frameless designs excel at carrying light loads efficiently. Once you exceed 30 pounds, comfort drops off sharply unless you have significant experience with frameless packing techniques.

You’re committed to the ultralight philosophy. Frameless packs force gear minimalism because they simply don’t carry heavy loads well. If you’re willing to invest in lightweight gear and carefully curate your kit, frameless will reward you with significant weight savings.

You prioritize weight savings over convenience. Frameless packs typically have fewer pockets, simpler organization, and less structure. If you value every ounce over convenience features, frameless is the way to go.

Choose Framed If:

Your typical load exceeds 30 pounds. Internal frames handle heavier loads more comfortably, transferring weight effectively to your hips. I’ve carried 40-plus pounds comfortably in framed packs that would have been miserable in frameless designs.

You’re new to backpacking. The learning curve for frameless packs is real. Beginners often struggle with packing technique and end up uncomfortable. A framed pack is more forgiving and lets you focus on learning backpacking skills rather than packing skills.

You value structure and organization. Framed packs typically offer more pockets, better organization, and easier access to gear. If you like having a place for everything, framed packs deliver a more user-friendly experience.

Many experienced backpackers own both types. I use frameless for lightweight three-season trips and framed for winter camping or when carrying extra photography gear. Each has its place, and the right choice depends on the specific trip.

Understanding Frameless Backpack Materials

The material of your frameless pack determines both weight and durability. Understanding these materials helps you choose based on your intended use.

Ripstop Nylon

The most common material for frameless packs, ripstop nylon balances weight and durability effectively. The grid pattern prevents small tears from spreading, extending pack life. Denier counts typically range from 210D for lightweight packs to 500D for burlier designs.

Dyneema and Cuben Fiber

These ultra-high-molecular-weight polyethylene materials offer incredible strength at minimal weight. Packs made from these materials can weigh under a pound while still carrying respectable loads. The downside is cost, with Dyneema packs often running twice the price of nylon equivalents.

UHMWPE Fabric

Used in packs like the Acqorad QiDian Pro, UHMWPE offers Dyneema-like performance at a lower price point. It provides excellent tear resistance and durability while remaining lightweight. This material is becoming increasingly common in mid-range ultralight packs.

Robic Nylon

A high-tenacity nylon that offers significantly better abrasion resistance than standard nylon. Packs made with Robic can use lighter fabric weights while maintaining durability. It’s an excellent choice for rocky environments where abrasion is a concern.

Buying Guide: Choosing the Best Frameless Backpack

Choosing the right frameless backpack requires matching features to your specific needs. After testing dozens of packs over several hiking seasons, I’ve identified the key factors that matter most.

Capacity Considerations

Frameless pack capacity should match your trip length and gear choices. For weekend trips with lightweight gear, 40-50 liters provides plenty of space. Week-long trips typically require 50-60 liters to accommodate extra food. Day hikers should look at 20-35 liter packs.

Remember that frameless packs require more disciplined packing. You can’t just throw everything in and expect it to carry well. Choose capacity based on realistic gear needs, not wishful thinking about what you might bring.

Weight vs. Comfort Tradeoff

The lightest frameless packs sacrifice padding and structure for minimal weight. If you’re carrying under 20 pounds, this works fine. For loads approaching 30 pounds, some frame sheet or padding becomes necessary for comfort.

I recommend prioritizing comfort over minimal weight unless you’re a committed ultralight backpacker. A pack that’s six ounces heavier but carries comfortably will make for a better trip than the lightest possible pack that causes shoulder pain.

Suspension System

Even frameless packs need some suspension design. Look for shoulder straps that distribute weight without pressure points. A hip belt, even if minimal, helps stabilize the load and transfer some weight to your hips.

The best suspension systems disappear when you’re hiking. You shouldn’t be constantly adjusting straps or feeling hot spots. If a pack’s suspension feels good in the store but causes discomfort after a few miles, it’s not the right pack for you.

Climate and Weather Protection

Hiking in wet climates demands weather protection. Some frameless packs use waterproof materials and roll-top closures to eliminate the need for a pack cover. Others rely on DWR coatings and include a separate rain cover.

I prefer integrated weather protection for simplicity. A waterproof roll-top pack means one less thing to forget and one less item to carry. But in dry climates, this feature matters less and might add unnecessary cost.

Frameless Backpacks by Use Case

Best for Thru-Hiking

Thru-hikers need packs that balance capacity, comfort, and weight over thousands of miles. The Osprey Exos 58L stands out for its proven track record on the AT and PCT. Carrying capacity for large food resupplies combined with comfortable suspension makes it ideal for long-distance trails.

Dedicated ultralight thru-hikers might prefer frameless options from cottage manufacturers, but the Exos offers a more forgiving entry point. The small weight penalty is worth it for hikers who haven’t fully optimized their gear.

Best for Alpine Climbing

Alpine climbing demands packs that work as technical tools. The Osprey Mutant 38L and Deuter Guide 34+8L excel here, with ice axe attachments, helmet compatibility, and the ability to strip down for technical climbing.

Look for removable components that let you customize the pack for each phase of the climb. Waist belts that can be removed or reduced are essential for technical terrain where they interfere with harnesses.

Best for Day Hiking

Day hike frameless packs prioritize organization and convenience over capacity. The Peak Design Outdoor 25L and Gregory Zulu 30L both excel here, offering thoughtful pockets and comfortable carries for loads under 20 pounds.

For day hiking, weight matters less than functionality. A slightly heavier pack with good organization is preferable to an ultralight stuff sack that forces you to dump everything out to find your keys.

Best for Fastpacking

Fastpackers need packs that carry light loads comfortably over high mileage. The Acqorad QiDian Pro shines here, with its minimal weight and expandable capacity. When you’re moving fast and light, every ounce matters, and true frameless designs really come into their own.

Look for packs that compress down well when you’re carrying minimal gear but can expand when needed. Fastpacking often involves remote routes where you need to be more self-sufficient than typical day hikes.

Frequently Asked Questions