Featherlight Backpacks That Make Miles Melt Away
For most hikers, the Osprey Exos Pro 55 is the best lightweight backpacking pack. It balances a low weight with excellent ventilation and a comfortable suspension. But it is not the lightest option available, and its minimalist frame may not suit loads over 30 pounds.
Lighter packs mean you can hike farther with less fatigue. But cutting weight often means sacrificing comfort or durability. We compared the top lightweight backpacks to find the sweet spot for different types of hikers.
From ultralight frameless sacks to feature-rich framed packs, these models range from under two pounds to just over three. Each has strengths for particular trips, from weekend overnights to thru-hikes.
The top picks, ranked
Osprey Exos Pro 55
The Exos Pro 55 is a featherweight framed pack that still delivers Osprey’s signature fit. Its AirSpeed suspension keeps your back cool, and the trampoline mesh is comfortable on long miles. At just over two and a half pounds, it is light enough for fast travel but carries up to 30 pounds well.
Pros
- Excellent ventilation from trampoline back panel
- Very light for a framed pack
- Great adjustability and fit
Cons
- Hip belt pockets are tiny
- No included rain cover
ULA Equipment Circuit
The Circuit is a staple on long trails for a reason. It is handcrafted in the USA from durable Robic nylon, and its frame sheet transfers weight well. With a 68-liter total volume, it swallows a bear canister and a week of food. Owners report it lasts thousands of miles.
Pros
- Exceptional durability for its weight
- Customizable features and sizes
- Carries heavy loads comfortably
Cons
- Long lead time for custom orders
- Basic suspension without load lifters
Hyperlite Mountain Gear 2400 Southwest
The 2400 Southwest is a favorite among serious ultralight hikers. It features a Dyneema composite shell that is completely waterproof, so no pack cover is needed. The frame is a simple carbon fiber stay that helps transfer weight to the hip belt. It is not the lightest framed pack, but it is incredibly resilient.
Pros
- Fully waterproof without a cover
- Extremely durable despite low weight
- Minimalist design is simple and effective
Cons
- Very expensive
- No side pockets for water bottles
Granite Gear Crown2 60
The Crown2 60 is one of the most affordable lightweight packs with a removable frame and hip belt. It can be stripped down to under two pounds for ultralight loads, or you can keep the frame for heavier carries. It is known for its comfortable shoulder straps and good organization.
Pros
- Very affordable for the weight
- Frame and hip belt are removable
- Plenty of pockets and attachment points
Cons
- Frame can be uncomfortable with loads over 30 lb
- Material is less durable than pricier packs
Zpacks Arc Air 50
The Arc Air 50 uses Zpacks’ unique curved carbon fiber frame to create an air gap between the pack and your back. This allows for airflow that keeps you cool on hot climbs. It is also remarkably light and durable, though it requires careful packing to keep the frame stable.
Pros
- Outstanding back ventilation
- Very light with a real suspension system
- Custom options available from the maker
Cons
- Frame can shift if packed poorly
- No hip belt pockets included
Gregory Optic 48
The Optic 48 is Gregory’s lightweight take on a traditional backpack. It features a tensioned mesh back panel and a women’s version called the Octal. The harness is highly adjustable, and the hip belt is supportive. It is slightly heavier than some competitors but offers more comfort features.
Pros
- Very comfortable harness and hip belt
- Tensioned mesh keeps weight off your back
- Thoughtful pocket layout
Cons
- Heavier than other ultralight options
- Hip belt pockets are small
Six Moon Designs Fusion 50
The Fusion 50 is a hybrid pack that combines a lightweight body with a substantial frame. It is designed to carry heavy loads like hunting gear or photography equipment. The hip belt is padded and supportive, and the pack has multiple lash points. It is heavier than most ultralight packs, but it is built for tough conditions.
Pros
- Handles very heavy loads well
- Durable fabric and construction
- Multiple attachment points for gear
Cons
- Heavy for a lightweight pack
- Less breathable back panel
Compared at a glance
| # | Model | Weight | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | Osprey Exos Pro 55 | 2 lb 13 oz (size M) | Balanced ultralight comfort for weekend and multi-day trips | 9.4 | Check price |
| 2 | ULA Equipment Circuit | 2 lb 6 oz (size M/L) | Thru-hikers needing a tough, customizable pack | 9.2 | Check price |
| 3 | Hyperlite Mountain Gear 2400 Southwest | 2 lb 1 oz (size M) | Ultralight enthusiasts who want waterproof protection | 9.0 | Check price |
| 4 | Granite Gear Crown2 60 | 2 lb 9 oz (size M, with frame) | Budget-minded hikers who want a light pack | 8.8 | Check price |
| 5 | Zpacks Arc Air 50 | 1 lb 13 oz (size M, standard options) | Hikers who want maximum ventilation with an ultralight frame | 8.7 | Check price |
| 6 | Gregory Optic 48 | 2 lb 6 oz (size M) | Hikers who want a close, comfortable fit | 8.5 | Check price |
| 7 | Six Moon Designs Fusion 50 | 3 lb 4 oz (size M/L) | Hunters and hikers who need to carry bulky gear | 8.0 | Check price |
What matters most
Questions worth asking
What is the lightest backpacking backpack?
The lightest framed backpack on our list is the Zpacks Arc Air 50 at 1 lb 13 oz. There are even lighter frameless packs, but they cannot carry as much weight. For most hikers, a pack under 2.5 pounds is considered ultralight.
How much weight can a lightweight backpack carry?
Most lightweight framed packs are designed for loads up to 30 to 35 pounds. Some like the Six Moon Designs Fusion 50 can handle up to 50 pounds. Exceeding the recommended weight can cause discomfort and damage the frame.
Are ultralight backpacks durable?
Yes, many are made from high-tech materials like Dyneema or Robic nylon that are strong yet light. However, they are not indestructible. Owners report that the Hyperlite Mountain Gear 2400 Southwest lasts for thousands of miles. Always follow care instructions.
What size backpack do I need for a weekend trip?
For a weekend backpacking trip, a pack of 40 to 60 liters is usually enough. The Osprey Exos Pro 55 or Gregory Optic 48 are good choices. If you carry a bulky sleeping bag or bear canister, go larger.
Do lightweight backpacks have hip belt pockets?
Some do, but many ultralight packs omit them to save weight. The Osprey Exos Pro 55 has small hip belt pockets. The Zpacks Arc Air 50 does not include them. You can purchase aftermarket pockets if needed.
How do I pack a frameless backpack?
Frameless packs require careful packing to create a stable load. Place soft items like a sleeping bag at the bottom, and keep heavier items close to your back, mid-pack. Use a foam pad inside to add structure. Do not exceed 20 pounds total weight.
Can I use a lightweight backpack for day hikes?
Yes, but they are larger and have more features than needed. For day hikes, a smaller pack of 20 to 30 liters is more practical. However, if you already own a lightweight backpack, you can use it for day trips, especially in winter when you need extra layers.
What is the difference between a backpacking pack and a hiking pack?
Backpacking packs have larger volumes (40 liters and up) and frames to carry overnight gear. Hiking packs are smaller (under 30 liters) and have no internal frame. Choose based on the length of your trip.
Our take
For most backpackers, the Osprey Exos Pro 55 is the best choice because it offers a great balance of weight, comfort, and features. If you want the absolute lightest framed pack with good ventilation, pick the Zpacks Arc Air 50, but be prepared to pay more. If you are on a budget, the Granite Gear Crown2 60 is a solid value.
