Bone Dry Paw & Patch Ceramic Pet Collection, Medium Set, 6x2", Gray, 2 Piece Bowls are ceramic with a silicone ring at the base to keep the bowls from sliding on the floor and to help keep the bowl upright. No more messy floors for your to clean. They are also dishwasher-safe for your convenience. Medium: 6 x 2" (D x H), 1.5 cup capacity