The only one handed dog hydration system. Squeeze and water is in the bowl. Fresh water for your dog prevent health issues from public water bowls. Your pet will never be thirsty on a long hike. Holds 500ml easily fits in car holder squeeze and operate with one hand release the squeeze and the extra water drains back into the mug almost 100% leak tight The perfect hike companion for your pet. The bowl has a special valve that never wastes water. Squeeze the bottle to allow the water to come up to the bowl then release to allow the water to go back into the bottle. Never wasting a drop of water so your pet can travel longer.