【Two Different Sizes】: This Foldable dog water bottle 350ml.You can put it into backpack or hang on your hand with sling rope, very easy to carry to anywhere you want. 【Durable & Safe】 : Use high quality food grade material on this portable dog travel water bottle. BPA free for the water cup and ABS for water dispenser. Make sure your pets enjoy the clean water from a completely safe pet water bottle. 【Easy to use】 : One-key Open / Lock water, One-hand operation, open the lock key, press water key to fill water, release to stop water, very easy to feed your dogs. Help you take better care of dogs easily. Let your pet dog enjoy travel. 【Multiple Leak-proof】: This Dog Water Bottle Built in Silicone Anti-leakage Ring,with Transparent Cover,Dust Prooof,One Key to Lock Water,Leak-proof,Arc-shaped Flume Design,Fit Pet Drinking Habits 【No Water Waste】 : You can drain the water back into the dog water bottle when your puppy finishes drinking.