REI Co-op Ultralight Daypacks

By Activity

• Hiking: can hold a water reservoir and available in different torso sizes for right fit
• Climbing: narrow profile, abrasion-resistant reinforcements
• Traveling: pockets or compartments for organization, carry-on size

Capacity

• Packs that hold 20L or less are best for runs, day hikes, mountain biking or short trips.
• Packs between 20–35L are great for longer day hikes and as a travel carry-on.
• Packs holding 35–50L work for extended trips and mountaineering or climbing that calls for extra equipment.

Fit

The right daypack fit offers:

• A size appropriate for your torso length (not your overall height)
• A comfortably snug grip on your hips

Choose a pant fit

• Standard: consistent width from top to bottom
• Slim: tighter to the leg
• Relaxed or wider: fits loosely throughout the thighs, knees and calves

What material do you prefer?

• Synthetic
• Polyester: affordable, stretchy, doesn't wrinkle
• Nylon: durable, abrasion-resistant, less stretch
• Spandex: stretchy, moves easily, less breathable
• Natural fibers
• Cotton: durable, breathable, dries slowly
• Wool: stretchy, durable, odor-resistant, pricier
• Hemp: durable, renewable, can feel rougher

Consider additional features like:

• Moisture wicking: moves moisture (namely, sweat) to the outer surface while also drying quickly
• Pockets: help carry items you want to have accessible
• Sun-protective fabric: a higher UPF rating provides better sun protection
• Convertible: can be worn full-length or as shorts
• Insect repellent: pants treated with insect-repellent coatings can help keep pests off