Product structure: Portable water bag with integrated design, with high performance waterproof design. There is a gasket on the lid, and it will never leak even if you press hard. Immutable types do not age. High quality PVC fresh water hose, length 100 cm. Each product is rigorously tested and can be installed at room temperature. It cannot be filled with drinks and hot water.HIGH CAPACITY: 3L portable hydration pack is enough for daily needs. The large airbag opening makes filling and cleaning very convenient. The ergonomic handle makes the handle more comfortable, and the water inlet cover is designed to prevent spills.High quality material: PVC drinking water pipe for backpack d hydration. The bag is translucent and has a volume scale printed on it. A dropout is attached for use with the rear suspension. Foldable collection, easy to carry. Excellent overall usabilityFeatures: Large water inlet bladder, inner diameter 100mm. In addition to the function of easily placing ice cubes in the bag body to clean the inside of the water bag, it can also easily grasp the bag body and turn it over to thoroughly clean the water bag. In special cases, you can also top up valuables such as mobile phones