REI Co-op Trail 25 Pack vs Patagonia Terravia Pack 28L

Editorial Team
Last modified at May 28, 2026
Choosing the right daypack often comes down to balancing storage needs with on-trail comfort. The REI Co-op Trail 25 Pack and the Patagonia Terravia Pack 28L are both highly rated options for hikers tackling short to moderate trails, yet they cater to slightly different priorities. The REI pack stands out with its exceptional array of pockets and rock-solid stability, making it ideal for those who need quick access to gear. In contrast, the Patagonia Terravia focuses on a customizable fit and better airflow, utilizing a breathable mesh back panel and highly adjustable suspension system. While both packs share similar durability ratings and overall scores, your choice will likely depend on whether you prioritize organizational versatility or a tailored, cool carry.

Why You Can Trust Us

  • Side-by-side analysis based on real user feedback
  • Unbiased comparisons, not influenced by partnerships
  • Updated as new data becomes available

We may earn from affiliate links at no extra cost to you.

REI Co-op Trail 25 PackPatagonia Terravia Pack 28L
REI Co-op Trail 25 PackPatagonia Terravia Pack 28L
Capacity

1,526 cu in

1,709 cu in

Weight

29 oz

26 oz

Material

Ripstop nylon, recycled polyester

100% recycled nylon ripstop with a PU coating

Hip Belt

Padded, adjustable

Yes, with side pockets

Back Panel Type

Internal HDPE framesheet with padded back panel

Raised, breathable airmesh

Warranty

1 Year

Ironclad Guarantee

Sternum Strap

Adjustable sternum strap

Adjustable sternum strap

Comfort

REI Co-op Trail 25 Pack

4.2/ 5.0

Patagonia Terravia Pack 28L

4.4/ 5.0

Comfort is the foundation of a good hiking experience, determining whether a pack feels like a burden or a seamless extension of your body. For daypacks, this involves how well the weight is distributed, the quality of padding on the straps and back, and the ability to carry the load for extended periods without chafing. The Patagonia Terravia Pack 28L takes the lead here with a 4.4/5 rating, praised by users for its breathable comfortable mesh and harness system that makes it incredibly comfortable to wear long-term. Buyers note that the weight is distributed really well, and the flexibility of the belt adds to the overall ease of carry. The REI Co-op Trail 25 Pack is also a strong contender with a 4.2/5 rating, offering a ride that doesn't jostle around too much and fits really nicely on the back. However, some users mention that the back panel isn't supremely breathable and that airflow can be limited, leading to back sweat during intense activity. While both packs provide adequate padding and a comfortable fit for most, the Patagonia's superior breathability gives it the edge for warmer conditions.

Durability

REI Co-op Trail 25 Pack

4.4/ 5.0

Patagonia Terravia Pack 28L

4.4/ 5.0

Durability ensures that your pack can withstand the rigors of the trail, from brush and scrapes to sudden weather changes, without failing when you need it most. Both the REI Co-op Trail 25 Pack and the Patagonia Terravia Pack 28L earn identical 4.4/5 ratings in this category, reflecting high confidence in their construction. Users of the REI pack describe it as a fairly durable pack that is going to last for a pretty long time, citing its durable fabric and protective ring covers as key strengths. Similarly, the Patagonia Terravia is built with sturdy recycled nylon ripstop and a weather-resistant coating that allows water to roll right off, even after getting stuck in gnarly weather. Both bags are designed to hold up to the elements and scrapes, with the Patagonia specifically highlighting its 100% recycled materials and robust lining. Since both options receive universal praise for their longevity and ability to handle regular use, there is no clear winner, and either choice will serve as a reliable workhorse for years.

Ventilation

REI Co-op Trail 25 Pack

3.6/ 5.0

Patagonia Terravia Pack 28L

4.1/ 5.0

Effective ventilation is critical for preventing overheating and excessive sweat buildup, especially during fast-paced hikes or in hot weather. The Patagonia Terravia Pack 28L outperforms the competition with a 4.1/5 rating, thanks to its raised, breathable airmesh back panel that allows air to flow through the body. Buyers consistently highlight the extra breathability and the air channel design, noting that the mesh system keeps them relatively cool. In comparison, the REI Co-op Trail 25 Pack scores a lower 3.6/5, with feedback indicating that the back panel isn't supremely breathable and doesn't allow as much air flow through. While the REI pack does feature a center channel and raised foam sheet to provide some ventilation, users report that sweat can still roll down and that the airflow is not as effective as a dedicated mesh system. For hikers who prioritize staying cool and dry, the Patagonia's superior airflow design makes it the clear choice over the more solid but less ventilated REI option.

Organization

REI Co-op Trail 25 Pack

4.9/ 5.0

Patagonia Terravia Pack 28L

4.2/ 5.0

Organization determines how easily you can access your gear without stopping to dig through a single large compartment, which is vital for hydration, snacks, and safety items. The REI Co-op Trail 25 Pack dominates this category with an impressive 4.9/5 rating, offering a vast array of storage solutions that buyers describe as a lot of bells and whistles. It features two enormous side pockets, a main compartment that unzips halfway down, and numerous dedicated spots for water bladders, trekking poles, and accessories. Users love the easy-open zippers, the drop pocket on the interior, and the multiple external compartments that keep everything sorted. The Patagonia Terravia Pack 28L is also well-organized with a 4.2/5 rating, featuring a top loader closure, zippered lid pocket, and strategic pockets including hip belt storage. However, some users note that it can be a one big dark pit where it is hard to grab one thing quickly, and it lacks the sheer volume of specialized pockets found on the REI pack. If you need maximum accessibility and compartmentalization, the REI pack is the superior tool.

Stability

REI Co-op Trail 25 Pack

4.4/ 5.0

Patagonia Terravia Pack 28L

3.9/ 5.0

Stability refers to how securely the pack stays in place during movement, preventing it from shifting or bouncing on uneven terrain. The REI Co-op Trail 25 Pack earns a 4.4/5 rating for its ability to stay put, with users praising the Sterno strap and hip belt for keeping the load tight and preventing jostling. The internal HDPE framesheet adds rigidity, ensuring the pack maintains its shape and doesn't shift around as you move. The Patagonia Terravia Pack 28L scores a 3.9/5, with feedback suggesting that while the adjustable hip belt distributes the load well, stability could be better on uneven ground. Although it features a steel perimeter and removable internal frame to add structure, some users feel the bag can cave in on the back or that water bottle security is less robust than the REI's compression system. For hikers who need a pack that feels locked onto their back during technical sections, the REI Co-op Trail 25 offers a more stable and secure carry experience.

Adjustability

REI Co-op Trail 25 Pack

4.1/ 5.0

Patagonia Terravia Pack 28L

4.7/ 5.0

Adjustability allows a pack to be fine-tuned to your specific body shape, ensuring a comfortable and efficient fit for a wide range of users. The Patagonia Terravia Pack 28L is the clear leader here with a 4.7/5 rating, offering a highly flexible suspension system that includes small, medium, and large back panel sizes. Users praise the adjustable hip belt, compression straps, and G-hook adjustments that allow them to lock down the fit perfectly. The REI Co-op Trail 25 Pack is also adjustable with a 4.1/5 rating, featuring an adjustable slider sternum strap and removable hip belt that can be customized to some degree. However, the Patagonia's ability to change the back panel size and the extensive range of strap adjustments provides a more personalized fit that accommodates different torso lengths and body types more effectively. For those who struggle to find a one-size-fits-all solution, the Patagonia's superior adjustability makes it the better option.

Trust & Transparency

  • Data-driven rankings from real user reviews
  • Affiliate partnerships don't influence our methodology

We may earn commission from links.

Conclusion & Final Verdict:

Both the REI Co-op Trail 25 and the Patagonia Terravia 28L are excellent daypacks, but they serve different hiking styles. Choose the REI Co-op Trail 25 if your priority is organization and stability; its abundance of pockets and secure fit make it perfect for hikers who need quick access to gear and a pack that stays locked in place. Opt for the Patagonia Terravia 28L if you value comfort, breathability, and adjustability; its superior ventilation, lighter weight, and customizable fit make it the better choice for warm weather hikes or those who need a tailored suspension system. While the REI wins on storage utility, the Patagonia edges it out with a more comfortable, breathable, and eco-friendly design backed by a stronger warranty.

See All Comparisons

Related Comparisons