20oz/.6L Botttle Included Weight 7.5oz/213g Storage 75 in3/1.2L Lightweight mesh material on the holster ? Ultra-wicking Hydrophilic Interlock back panel provides optimal ventilation and Ciba antimicrobial finish helps prevent odors ? 300D Polyester Baby Ripstop ?Nylon Mesh Strap Secure webbing control ? Reflective piping