ZOMAKE Hydration Bladder 3 Litre Water Reservoir,FDA Approved Non Toxic BPA Free Strong Materia As the most popular design for high end hydration systems in recent years, this allows you to refill in any condition. Cleaning, rinsing and drying are very convenient. You may also add ice cubes into it. Anti-bacteria material. Patented GlassAS technology makes it a high smooth interior surface. The smoothness of the liner prevents the germ and the lime from adhension, which promotes health. Might be the most rigid hydration bladder on the market: 0.6mm extra thick liner is pressure-tolerant and wearproof; double soldering sealing side technique has greatly improved durablity. Patented mouth piece and hose connector: Anti-microbial mouth piece, high flow, auto-lock function to prevent leaking, comes with dust cover. Selflock connector allows you to unhook the tube quickly without any leaking. Capacity: 50 oz / 2 litre Options.The whole system is made of food grade material and is SGS and FDA certificated. 6.7"(W) x 13.7"(L) inches