The Ripper is OGIO's first lumbar hydration pack. Built to be worn across the back, the Ripper leaves your chest and shoulder area unencumbered. The 1.5 liter bladder size is great for all types of rides. Dedicated Anti-Sloshing hydration bladder compartment with hook-and-loop secure strap for holding bladder in place and tube channel port. Features a top fill closure and anti-slosh stabilizing handle for easy fill and cleaning. Insulated Cooler Fabric lining that keeps liquid cold for 30% longer. Two (2) side pockets for small item storage. Front storage pocket for larger items. Bungee cord front area great for lightweight clothes and jackets. Back panel made with EVA foam and mesh backing. 150D mini honeycomb ripstop with PU 3x backing. 50 ounce / 1.5 liter bladder - Custom mPE/EVA film made in the U.S.A., naturally anti-odor, BPA-free, zero taste, and odor-free.