100% Polyester. UA Storm technology delivers an element-battling, highly water-repellent finish. Tough, TPU-coated bottom panel extends up the front for added durability. Full-length, front insulated zippered pocket doubles as a water bottle sleeve or valuables pocket. Fleece-lined front valuables pocket. Adjustable cording straps can easily be tied for a custom length & fit. Molle webbing on front panel for additional attachment points. Custom UA sternum clip. Dimensions when full: 2.4"W x 21.1"H x 15.4"L. Volume: 20L. Logo location is top front of the bag.