For everything you need and nothing you don't, Hydrapak's Avila is the answer. Its ultra-lightweight frame and Speed Harness Ultimate Mobility Straps make the 70 ounces of water in the Reversible Elite Reservoir practically disappear from your back. Plus, a key clip and mesh pocket lock in your essentials.
Liquid capacity: 70 ounces
Cargo capacity: 40 cubic inches
Pack weight: 7 ounces
Hydrapak's Reversible Elite Reservoir can be turned inside out for super easy cleaning and drying.