How the Buddy Bowl works: The Buddy Bowl is made of three tough molded polycarbonate plastic parts which lock together. Its unique three-section construction creates two chambers for water supply: the funnel-shaped drinking chamber, which gives your dog access to a refilling water supply, and the containment chamber which holds a generous supply of water. The containment chamber is enclosed on all sides and won't spill even if flipped upside-down. An opening in the bottom of the funnel-shaped Drinking Chamber lets water in from the Supply Chamber to restore the drinking supply. A gravity-activated valve near top of funnel piece allows air into the Supply Chamber as water is depleted, but closes when the bowl is upside-down to keep the water from leaking out. Features: Thick, abuse-resiliant construction resists claws, teeth, and gnawing Four fastening-point holes on the bottom edge for tying to a stable surface or a backpack ...... Works inside vehicles -- prevent spills ,..... 1 quart size.... Dishwasher safe .... Disassembles for easy cleaning ..... Available in Blue, Red, Purple, and Granite Made in USA