Sports water bag: TPU with high-grade heat from environmental profile, with super toughness, compression wear and heat antifreeze and so on. Inhibit bacteria and mold change, material standard certification by SGS International, through the FDA testing, security, non-toxic environment. Compression wear resistance. Insulation can be added sets of specifications 1L, 1.5L, 2.0L, 2.5L, 3L, a large mouth and small mouth, according to customer requirements to do camouflage, green, green, light blue, gray scrub and other colors. Can send e-mail: mf23 @