Easy to use, the large opening can be filled quickly, tightly closed, leak-proof and sealed, the handle is designed to be easy to carry and put in the bag, it can be firmly grasped during filling and dumping, the suction pipe flow is stable and not blocked, and the bite valve is on each It will be automatically sealed after drinking to prevent leakage. The design of the external volume scale allows you to track water intake and remaining water in time. It is made of wear-resistant TPU material with excellent durability and elasticity. Dust cover can protect the silicone bite mouth to avoid collecting dust.