STAINLESS STEEL DOG BOWLS-Our food and water bowls for dogs are made of double wall insulation and 304 food grade stainless steel, which is super long lasting, rustproof, scratchproof, environmental friendly. The outside of our non-slip dog bowls are made of Acrylonitrile Butadiene Styrene (ABS) for more durability. SAFETY DESIGN-Pet feeding bowl adopts mirror polishing process, which has an elegant look and smooth touch. The flat edges will not hurt the dog's tongue, rust-proof and easy to clean. NON SLIP & ODOR FREE-The non skid dog bowls feature premium quality & built tough making it an indestructible, chew proof, heavy duty weighted bowl for large dogs. Our dog bowls for large dogs has a full circle, non-slip rubber ring prevent flipping, sliding and floor scratches.