jntworld Hydration Bladder Bag Water Container for Hiking War Game Cycling Training Material: Made from PEVA, safety and non-toxic, antibacterial and strong hydrolysis resistance. Nozzle: With open and lock device, when it is in open state, just gently pull the mouth, it is very convenient. When it is in lock state, the water will not flow out, good sealing. Hang system: Double holes design above bag body, it can be used with a dedicated water bag backpack or water nozzle handle. Water injection: Designed with cover and handle, easy to operate. Suitable occasion: A great necessity for riding, hiking, camping and any outdoor sports.