About this item This Pet Water Bottle is great for walking and travelling with you dog or cat. Portable and Convenient. One key Open/Lock water, one hand operation, easy to feed water. 350ML/550ML capacity, quickly provide your thirsty pets with fresh water when outdoor walking, running, hiking, travelling. Compact size, a perfect travel water bottle for pets. Portable Pet Water Bottles are suitable for Small Medium Large Dogs, you can put it into backpack or hang on your hand with sling rope, very easy to carry.