The Ripper is our first lumbar hydration pack. Built to be worn across the back, the Ripper leaves your chest and shoulder area unencumbered. The 1.5L bladder size is great for all types of rides. Features: Dedicated Anti-Sloshing hydration bladder compartment with hook & 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, 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, 50oz./1.5L bladder – Custom mPE/EVA film, BPA free, zero taste, and odor-free Specs: 7.5” H x 10” W x 4.5” D / CM 19 H x 25 W x 11 D , 335 Cu.In/5.5 L (includes bladder), 150D Mini honeycomb rip stop with PU 3x backing