Alps Mountaineering Hydro Bladder Option:Default to the UIAA Water Repellent

to the UIAA Water Repellent Test

2" (5cm) crushable brim

Other specifications include overall length 4-1/2 in

Waterproof/breathable Triple-F membrane backs up the full leather upper

Alps Mountaineering Hydro Bladder Option:Default to the UIAA Water RepellentThe Reservoir 3. 0 is a 3 liter reservoir perfectly designed to pair with your ALPS pack. The Ultravalve on the Reservoir 3. 0 features a revolutionary articulating bit valve as well as a built in check valve that eliminates backwash and prevents air from entering the tube. It also has a feature that allows it to twist open for a no bite, full flow function. The anit microbial IonPure treatment helps prevent bacteria and mold growth. The Reservoir 3.