The Hammers 2L hydration pack features an ergonomic fit and streamlined design. A great pack for a quick trail ride or hike. Dedicated Anti-Sloshing hydration bladder compartment with hook & loop secure strap for holding bladder in place and tube channel port Insulated Cooler Fabric lining that keeps liquid cold for 30% longer Front compartment with mesh ventilation for accessories Ergonomic padded back with directional air flow Multi-Adjust harness system designed for easy maneuverability. Built for precision fit of all body types 70oz./2L bladder -Made in USA custom mPE/EVA film, naturally anti-microbial, BPA free, zero taste, and odor-free. Features a top fill closure and anti-slosh stabilizing handle for easy fill and cleaning 16.75" H x 9.5" W x 4" D / CM 42.5 H x 24 W x 10 D 1.3 Lbs. / 0.6 Kg (excludes bladder) 300 Cu.In / 4.9 L (includes bladder) 150D Mini honeycomb rip stop with TPE backing & 420HD Oxford Nylon with PU backing