Osprey Skimmer 16 vs REI Co-op Traverse 35 Pack - Men's

Editorial Team
Last modified at June 7, 2026
Choosing the right hydration pack often comes down to a trade-off between capacity and climate control. The Osprey Skimmer 16 is a streamlined option designed for hikers who value a snug, bounce-free fit and rugged construction, making it ideal for technical terrain where gear security is paramount. In contrast, the REI Co-op Traverse 35 Pack - Men's steps up significantly in volume and airflow, featuring a suspended back panel and extensive pocket systems that cater to those tackling longer distances in warm weather. While the Osprey excels in keeping your load tight and protected, the REI pack shines when breathability and storage versatility are the top priorities.

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Osprey Skimmer 16REI Co-op Traverse 35 Pack - Men's
Skimmer 16
REI Co-op Traverse 35 Pack - Men's
Capacity

976 cu in

2133 cu in

Weight

1.42 lb

18-20 Torso / S-M Hip: 3 lb 4 oz
18-20 Torso / L-XL Hip: 3 lb 5 oz
18-20 Torso / XXL-4XL Hip: 3 lb 8 oz

Hip Belt

Removable 0.8 in webbing hipbelt

Hipbelt included

Hydration Sleeve

Hydration sleeve

Hydration sleeve

Bladder Capacity

84.5 fl oz

N/A

Warranty

Lifetime

N/A

Compression Strap

Dual upper side compression straps

Compression straps

Mesh Back Panel

Mesh backpanel

Mesh backpanel

Sternum Strap

Sternum strap

Sternum strap

Rain Cover

Integrated removable raincover

Included

Frame Sheet

N/A

Framesheet

Side Pockets

Dual stretch mesh side pockets

Side pockets

Trekking Pole Attachment

Dual lower trekking pole attachment loops

Pole attachment

Comfort

Skimmer 16

4.6/ 5.0

REI Co-op Traverse 35 Pack - Men's

4.3/ 5.0

Comfort on the trail is determined by how well a pack distributes weight and minimizes fatigue over time. For the Osprey Skimmer 16, buyers consistently highlight a fit that feels secure and stable, with features like seat cushions and a retractable back rest contributing to a comfortable experience during long rides or hikes. The REI Co-op Traverse 35 also scores highly, with users praising its hip support, well-padded shoulder straps, and a suspended back design that covers a wider area of the lower back. However, the Osprey edges out the competition with a perfect positive sentiment ratio, whereas the REI pack has a few scattered complaints regarding neck fit and waist sizing that prevent it from feeling flawless for every user. Ultimately, if you need a pack that feels like a seamless extension of your body without any pressure points, the Osprey offers a slightly more universally comfortable experience.

Durability

Skimmer 16

4.6/ 5.0

REI Co-op Traverse 35 Pack - Men's

3.9/ 5.0

Durability is critical for gear that faces abrasion from rocks, branches, and repeated packing. The Osprey Skimmer 16 is built to last, with feedback emphasizing its robust materials and construction that keep the pack looking brand new for a long time, even after prolonged use. In comparison, the REI Co-op Traverse 35 is praised for its water-resistant materials and thick mesh, with some users reporting it has served them well for a decade, though others note visible wear, fading, and minor damage after heavy use. While both packs are constructed from quality materials, the Osprey receives unanimous praise for its resilience, whereas the REI pack shows a split between long-term survivors and those experiencing faster degradation. For hikers tackling rough terrain who need a pack that will withstand years of abuse without showing signs of life, the Osprey is the more reliable choice.

Ventilation

Skimmer 16

3.0/ 5.0

REI Co-op Traverse 35 Pack - Men's

4.4/ 5.0

Ventilation is the deciding factor for hikers in hot climates, as poor airflow can lead to excessive sweating and discomfort. The Osprey Skimmer 16 lacks specific buyer feedback regarding airflow, resulting in a neutral rating where it is neither praised nor criticized for breathability. Conversely, the REI Co-op Traverse 35 is a standout in this category, with users explicitly stating that it allows a ton of air to flow and keeps them significantly cooler than other packs. The REI design features channels cut into the straps and back panels for heat dispersal, directly addressing the issue of sweaty backs that plagues many hikers. If you are hiking in hot weather or have a high sweat rate, the REI Co-op Traverse 35 is the clear winner, offering a breathable solution that the Osprey does not currently demonstrate.

Accessibility

Skimmer 16

4.6/ 5.0

REI Co-op Traverse 35 Pack - Men's

4.2/ 5.0

Accessibility refers to how easily you can reach your water, snacks, and gear without removing the pack. The Osprey Skimmer 16 features a design that allows for easy access to hydration and gear, with a 360-degree walk-around concept and lift-up functionality that makes retrieving items convenient. The REI Co-op Traverse 35 also performs well, with a main compartment that opens wide and a hydration bladder setup that allows you to reach your water bottle while the pack is still on. However, the REI pack has some mixed feedback regarding top-loading limitations and the inability to access certain compartments without undoing straps, whereas the Osprey's feedback is uniformly positive regarding its ease of use. For hikers who need to grab essentials quickly and frequently without stopping to take off their pack, the Osprey Skimmer 16 offers a more seamless and frustration-free experience.

Stability

Skimmer 16

4.6/ 5.0

REI Co-op Traverse 35 Pack - Men's

4.8/ 5.0

Stability ensures that your gear stays put and doesn't bounce or shift during dynamic movement on uneven trails. The Osprey Skimmer 16 is noted for its stable design, keeping the pack securely in place with features like a flat bottom and spray rails that prevent unwanted movement. The REI Co-op Traverse 35 takes this a step further, earning near-perfect scores for its ability to cinch the bag tightly onto the body using a spring steel frame and multiple compression systems. Users of the REI pack report that it feels safe and tight, with no gear shifting around inside, effectively lifting the load closer to the center of gravity. While both packs offer excellent stability, the REI Co-op Traverse 35 provides a more aggressive and secure hold, making it the superior choice for technical terrain where every ounce of movement matters.

Organization

Skimmer 16

4.6/ 5.0

REI Co-op Traverse 35 Pack - Men's

4.8/ 5.0

Organization determines how effectively you can sort and store your gear, from small essentials to larger layers. The Osprey Skimmer 16 offers ample storage options with well-designed compartments, including front and back hatches that help keep gear organized and accessible. The REI Co-op Traverse 35, however, is a powerhouse in this category, featuring a massive main compartment, outer mesh pouches, hip strap pouches, and numerous internal pockets that allow users to organize everything from fire-starting kits to trekking poles. With nearly 50 mentions of its storage capabilities, the REI pack is praised for having tons of room and specific spots for every item, whereas the Osprey is more compact and focused on essentials. For hikers who carry a wide variety of gear and need a dedicated place for everything, the REI Co-op Traverse 35 offers unmatched organizational versatility.

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Conclusion & Final Verdict:

The choice between these two packs depends entirely on your hiking style and climate. Choose the Osprey Skimmer 16 if you prioritize a lightweight, ultra-durable pack that stays rock-solid on technical terrain and offers excellent accessibility for day hikes. It is the ideal companion for fast-and-light adventures where every ounce counts and durability is non-negotiable. Choose the REI Co-op Traverse 35 if you need maximum capacity, superior ventilation for hot weather, and extensive organization for longer treks. Its breathable design and massive storage make it the better option for hikers who carry more gear and sweat more, provided you can accept the extra weight and slightly lower durability rating.

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