CCbetter Leak-proof Hydration Bladder Water Reservoir Pack - 3 Liter/100oz Backpack System- with Wide Opening- TPU with Microban Protection - FDA Approved Non Toxic Tasteless BPA Free - Blue Made of TPU with Microban antimicrobial material, FDA Approved and SGS Certificated. The Glass As technology makes the inner surface as smooth as glass, effectively prevent the formation of scale. The Microban antimicrobial technology can permanently eliminate the pest, both bacteria and fungi cannot survive in hydrating reservoir, which is good for your health. Dual Opening Design: Supports Screw cap for easily adding the water & sliding wide-mouth opening for comfortable cleaning and quick dry, also makes it convenient for you to put the ice cube into the hydrating reservoir. The slide lock can be close securely, so you dont have to worry about the leakage. Easy straw silicone mouth piece, just push the white piston inwards with your front teeth and sip. The self-lock function will completely prevent the leakage. Every mouth piece has a dust protective cover to keep the mouth piece clean. One-batch forming, can be used with hydration backpack. Spacer in the screw cap and the end of the hose protect it from leaking, it will never leak even you squeeze it. Hose measured of 100cm length, long enough for you to drink. Water pressure resistance test: 60kg. Reservoir length: 40cm; Reservoir width: 20cm; Hose length: 100cm.