These collapsible/expandable food and water Kennel Bowls are really convenient. Attach the bracket that holds the bowl to a wire crate door or to a kennel wall. Insert the collapsible/expandable bowl and twist it a quarter turn to lock the bowl in place; this prevents the dog from knocking the bowl out of the holder and spilling anything. Pop out the bowl to expand it when you're ready to give your dog food or water. When you're done, collapse the bowl and then press the release button that allows you to flip up the bowl holder so your dog has all his crate or kennel space back. Collapse the Popware Kennel Bowl and put it in the dishwasher for a thorough cleaning. The bowl is 6" in diameter, 2" deep when open, and it holds 1 cup (8 oz.). It collapses to 5/8" high.
Popware Collapsible Kennel Bowls are made of thermoplastic elastomers (TPE), which are BPA- and phthalate-free and are also used in many of the products that the manufacturer uses in household products for humans. TPE is FDA-approved and is used in medical products like catheters and blood bags. Being 100% recyclable, TPE is more environmentally friendly than PVC. It has the positive properties of plastics but with the soft touch of rubber.