Hit the trail with hydration and style when you wear the ATLAS 3L Hydration Pack. No matter the journey, you can trust this hydration pack to stick by you. Dedicated anti-sloshing hydration bladder compartment with hook-and-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 airflow. Multi-adjust harness system designed for easy maneuverability; built for precision fit of all body types. 100-ounce / 3-liter bladder - Made in U.S.A. with custom mPE/EVA film, BPA free, zero taste, and odor-free. Features a top fill closure and anti-slosh stabilizing handle for easy fill and cleaning. Dimensions: 17.25"H x 9.5"W x 3.5"D. Weight: 1.35 pounds. Capacity: 305 cubic inches.