Military Grade QualityGIEMIT hydration pack is made of premium food grade PEVA material. FDA approved, 100% BPA and BPS free, odorless and non-toxic. The hydration bladder has passed the air pressure test and is fully pressure-resistant. The hydration bladder is equipped with double sealing technology on the side for increased durability. This hydration pack can be used in temperatures from -20C to +50C. DOUBLE OPENING Our hydration bag comes with a classic screw cap that is easy to unscrew and tighten. The screw cap is equipped with a connecting ring and is easy to carry. There is also a large opening at the top of the water bag for easy water filling, adding ice directly, cleaning and drying. Innovative Bite Valve The water bag has a soft bite mouthpiece with a 45 angle. Shut-off valve designed according to ergonomic principles, and the water flow is faster, allowing you to rehydrate easily and quickly. The water flow is conveniently controlled by the bite, and the water will not leak if not bite. Comes with dust cover. Upgraded Leakproof Design The quick release hose is detachable. The automatic shut-off valve prevents spills while the hose is being disconnected. Thanks to the 106 cm detachable hose, the automatic locking system and the 360 rotatable nozzle, this hydration pack is convenient and comfortable to use. Multifunctional This hydration pack has a large capacity of 3 liters, L 42 cm x W 20 cm, compatible with most hydration packs. Free your hands when drinking water. Perfect for your outdoor activities like running, cycling, climbing, hiking, etc., it is a must-have for sports enthusiasts. Double opening Comes with a classic screw cap that is easy to unscrew and tighten. The screw cap is designed with a connecting ring, easy to carry. Sealing instructions The large opening at the top makes it easy to fill with water and add ice cubes. Allows the bottle brush to easily reach the inner hydration bag for cleaning and natural air drying. Detachable hydration tube The hydration tube is 106 cm long and the detachable, self-locking connector allows you to connect the tube to remove without leaking. Military-grade quality The GIEMIT hydration bladder is made of high-quality food-grade PEVA material. Ultra-smooth inner surface, offers excellent resistance to bacteria and dust adhesion. 100% BPA and BPS free, odorless and non-toxic. The hydration bladder can withstand temperatures from -20 to 50 degrees Celsius and withstands temperature changes in hot and cold weather. Do not fill anything except water in your hydration bladder to prevent bacterial and mold growth. Super pressure resistance The hydration bladder has passed the air pressure test and is fully pressure resistant. The hydration bladder features double seal technology on the side for increased durability. This 3 liter Hydration Bladder measures L 42cm x W 20cm and is compatible with most hydration packs. Free your hands when drinking water. Perfect for your outdoor activities like running, cycling, climbing, hiking, etc., it is a must-have for sports enthusiasts.