Sweetwater UL 43L Backpack
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Sweetwater UL 43L—ultralight, durable, and comfortable backpack for fastpacking adventures
What Our Gearhead® Experts Are Saying:
"The Sweetwater is perfect for fastpacking or overnight trips. It fits like a dream thanks to its running-vest-inspired harness and load lifters. The recycled nylon is tough enough for rugged trails, and the included rain cover is a huge plus for unpredictable weather."
Set the pace with the Sweetwater UL 43L, an ultralight backpack that prioritizes fit, comfort, and durability. Designed with a running-vest-style harness, this pack hugs the chest, back, and shoulders for a secure carry, even on dynamic trails. Its proprietary Load Wrangler Plus system transfers weight from shoulders to hips, while adjustable straps and an anatomical back panel ensure stability and comfort. Built with ultralight recycled regen nylon made from discarded fishing nets, the Sweetwater UL 43L offers eco-conscious performance without compromise. A spacious main compartment with an expanding spindrift collar accommodates overnight essentials, while oversized stretch-mesh pockets provide quick storage for on-the-go access. An integrated rain cover from recycled materials offers extra weatherproofing for those unexpected trail showers.
Details
- Lightweight 43L backpack ideal for overnight or fastpacking trips
- Running-vest-style harness distributes weight for a secure, comfortable fit
- Made with recycled nylon and other earth-friendly, abrasion-resistant materials
- Oversized stretch-mesh stash pockets on front, sides, and chest straps
- Internal reservoir sleeve fits up to 3L for hands-free hydration
- Includes removable rain cover made from ultralight recycled materials
- Expanding spindrift collar adds extra storage when needed; compatible with 9-inch diameter bear canisters
- Item #BAGZ2FQ
- Responsible Collection
- Recycled/Repurposed
- Material
- [face fabric] regen ocean robic nylon ripstop from recycled fishing nets, [lining] recycled nylon ripstop, UTS coating, silicone coating
- Volume
- [small] 38L (2319cu in), [medium] 43L (2624cu in), [large] 44L (2685cu in)
- Support/Suspension
- integrated frame system, Load Wranger Plus
- Shoulder Straps
- running vest-style harness
- Waist Belt
- Open Range hip belt
- Hydration Compatible
- internal sleeve (3L)
- Access
- top
- Pockets
- 1 stretch mesh front, 2 stretch mesh side, 2 stretch mesh harness
- Trekking Pole Carry
- yes
- Rain Cover
- included, recycled nylon ripstop
- Compression
- side bungee straps
- Dimensions
- [medium] 28 x 12 x 9.5in
- Claimed Weight
- 2lb 10oz
- Activity
- ultralight backpacking, backpacking
- Manufacturer Warranty
- limited
Reviews
Q&A
What do you think about this product?
Overall Rating
5 based on 1 ratings
Review Summary
Fits True To Size
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Selecting an option will reload the available reviews on the pageSeptember 9, 2025
Great bag
- Familiarity:
- I've used it once or twice and have initial impressions
- Size Bought:
- Large
Really light and comfortable bag. Tons of space inside and out. Love the vest style straps and the mesh strap pockets for my map and phone.
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