Gregory Citro 24 H2O vs REI Co-op Traverse 35 Pack - Men's

Editorial Team
Last modified at June 7, 2026
Choosing the right hydration pack depends heavily on the length of your hike and how much gear you need to carry. The Gregory Citro 24 H2O is designed as a lightweight, ventilated solution for day hikers who prioritize comfort and easy access to water. In contrast, the REI Co-op Traverse 35 Pack - Men's steps up with a larger capacity and a robust suspension system, making it ideal for those tackling longer trails or carrying more substantial loads. While both packs excel in keeping you cool and hydrated, they cater to different hiking styles and endurance levels.

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Gregory Citro 24 H2OREI Co-op Traverse 35 Pack - Men's
Gregory Citro 24 H2O
REI Co-op Traverse 35 Pack - Men's
Capacity

1464.552 cu in

2133 cu in

Weight

2 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

Yes

Yes

Hydration Sleeve

Yes

Yes

Bladder Capacity

3 L / 100 fl oz

Reservoir not included; hydration compatible

Warranty

Lifetime Guarantee

REI return policy; product warranty not specified

Compression Strap

Not specified

Yes

Mesh Back Panel

Yes

Yes

Sternum Strap

Yes

Yes

Rain Cover

Yes

Yes

Frame Sheet

Yes

Yes

Side Pockets

Front stretch and dual side mesh pockets

Yes

Trekking Pole Attachment

Trekking pole/tool attachment point

Yes

Comfort

Gregory Citro 24 H2O

4.3/ 5.0

REI Co-op Traverse 35 Pack - Men's

4.3/ 5.0

Comfort is paramount for any hiker, as a poorly fitting pack can lead to shoulder fatigue and back pain over long distances. Buyers look for padded straps, ergonomic designs, and features that distribute weight evenly to ensure the pack feels like a natural extension of the body. Both the Gregory Citro 24 H2O and the REI Co-op Traverse 35 Pack score equally high in this category, with users praising their padded shoulder straps and supportive designs. The Gregory pack is noted for reducing shoulder fatigue through its well-fitted design, while the REI pack receives acclaim for its hip support and spring steel frame that keeps the bag secure. Ultimately, both options provide a comfortable experience for extended wear, making this a tie for hikers prioritizing all-day ease.

Durability

Gregory Citro 24 H2O

3.4/ 5.0

REI Co-op Traverse 35 Pack - Men's

3.9/ 5.0

Durability determines how well a pack withstands the rigors of rough terrain, scuffing, and long-term wear. Hikers need confidence that their gear will not rip or degrade quickly, especially when navigating rocky trails or dense brush. The REI Co-op Traverse 35 Pack edges out the competition here, with users reporting that the water-resistant materials and dense mesh construction have held up for years, with some citing a decade of service. In comparison, the Gregory Citro 24 H2O holds up well for most users but has received reports of scuffing and ripping over time, suggesting it requires more careful handling on rugged paths. For those planning to tackle rougher trails, the REI pack offers a more robust and reliable long-term solution.

Ventilation

Gregory Citro 24 H2O

4.3/ 5.0

REI Co-op Traverse 35 Pack - Men's

4.4/ 5.0

Effective ventilation is critical for preventing a sweaty back during intense physical activity, especially in hot weather. A good system uses mesh panels, suspended backs, or airflow channels to keep air moving between the pack and the wearer. Both packs excel in this area, earning near-identical scores from users who appreciate how cool they stay on the trail. The Gregory Citro 24 H2O utilizes a tension-suspended mesh back panel and external vents to promote excellent airflow, while the REI Co-op Traverse 35 Pack features tubular design back panels and channels cut for heat dispersal. Since both systems effectively alleviate sweaty backs and keep hikers cool, this category ends in a tie.

Accessibility

Gregory Citro 24 H2O

3.8/ 5.0

REI Co-op Traverse 35 Pack - Men's

4.2/ 5.0

Accessibility refers to how easily a hiker can reach water, snacks, and gear without stopping or removing the pack. Features like magnetic mouthpieces, wide-opening compartments, and strategically placed pockets are key to a seamless trail experience. The REI Co-op Traverse 35 Pack takes the lead here, with users praising its wide main compartment opening and the ability to reach water bottles without taking the pack off. While the Gregory Citro 24 H2O offers convenient magnetic attachments and Quick Connect features, some users find the mouthpiece detaches too easily during vigorous movement, which can be a nuisance. The REI pack's superior access points and stable hydration setup make it the better choice for hikers who need quick, reliable access to their essentials.

Stability

Gregory Citro 24 H2O

4.1/ 5.0

REI Co-op Traverse 35 Pack - Men's

4.8/ 5.0

Stability ensures that the pack remains balanced and secure against the body, preventing gear from shifting or flopping around during dynamic movement. A stable pack relies on features like hip belts, sternum straps, compression systems, and internal frames to lock the load in place. The REI Co-op Traverse 35 Pack is the clear winner in this category, with users raving about its spring steel frame and compression systems that bring the bag tight against the body. In contrast, while the Gregory Citro 24 H2O has a secure sternum strap and adjustable hip belt, it lacks the same level of load-locking technology found in the REI model. For hikers navigating uneven terrain or moving quickly, the REI pack provides a significantly more secure and stable ride.

Organization

Gregory Citro 24 H2O

4.1/ 5.0

REI Co-op Traverse 35 Pack - Men's

4.8/ 5.0

Organization involves the layout of pockets, dividers, and storage solutions that help keep gear sorted and accessible. A well-organized pack allows hikers to store water bladders, rain covers, and small essentials in dedicated spots without clutter. The REI Co-op Traverse 35 Pack dominates this category, offering an impressive array of pockets including hip strap pouches, a large top pocket, and a dedicated reservoir sleeve that users love for keeping everything tidy. The Gregory Citro 24 H2O also offers smart storage with multiple compartments and side pockets, but it falls short of the sheer volume and variety of storage options available in the REI pack. For hikers who carry a lot of gear and need to keep it meticulously organized, the REI pack is the superior choice.

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Conclusion & Final Verdict:

The Gregory Citro 24 H2O is the ideal choice for day hikers who prioritize a lightweight, breathable pack with a included bladder and lifetime warranty. It excels in comfort and ventilation but may lack the durability and stability needed for rougher, longer trails.

The REI Co-op Traverse 35 Pack - Men's is the superior option for hikers tackling longer distances or carrying more gear. It wins decisively in stability, organization, and accessibility, offering a larger capacity and a more robust suspension system. While it is heavier and does not include a bladder, its durability and secure fit make it the better investment for serious outdoor adventures.

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