Safe Material Food grade safety material: High Density Polyethylene. Safe and non-toxic, so it can be safely used for pets. BPA free, odorless, soft and recyclable material. The different parts are removable and easy to clean. Capacity check mark. (It is advisable that you provide your pet with the appropriate amount of water according to its drinking needs.) No WATER LEAKS and NO WASTE To improve the waterproof function, we add a waterproof lock on the bottle cap. Convenient to feed your pet, don't worry about water leakage. It will not wet your travel backpack. No waste of water. The bottle can also be squeezed without wasting water, even if there is only a small amount of water in the bottle. This is because it has a built-in water pipe. Tips: Please confirm the cleanliness and sanitation of the drinking water before filling the water to avoid the harm caused by drinking dirty water to your pet's health.