product description1. No Water Waste: Unused water can go back into the container easily by pressing the water key.2. Leak Proof: Silica gel seal ring plus lock key design, make sure the pet water bottle doesn't leak at all. No worry to get everywhere wet or waste water any more.3. Durable & Safe: The portable dog water bottle made of high quality food grade material, make sure your pet completely safe when they use our dog water dispenser bottle4. Portable Doggie Water Bottle: 12oz350ML/19oz 550MLReasonable capacity, enough for outdoor walking, hiking and traveling. Compact size make sure you can put it in your bag easily, or take it on your hand by the attached strap conveniently.5. Easy to use: One hand operation, press water key to fill water, release to stop water, very easy to feed your pet with water bottle for dogs.