Sure, sackpacks are easy, but we amped up the performance with an insulated water bottle sleeve and UA Storm so rain rolls right off. Water-resistant UA Storm technology keeps your essentials dry. 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. Front valuables pocket, Adjustable cording straps can easily be tied for a custom length & fit. Dimensions When Full: 21""H x 15.4""W x 2.6"" D, Volume: 22 L, Custom UA sternum clip, Molle webbing on front panel for additional attachment points. 100% Polyester