Material question: A bowl is just a bowl, right? Sadly, this is not the case. Most pet food bowls are made of stainless steel, plastic, and ceramic. Plastic is the worst choice, it contains chemicals that may upset the hormonal balance of the animal.On top of that, plastic can accumulate deep scratches, breed unsanitary things, and is difficult to clean. Ceramic is heavier and less durable. A single drop or impact can shatter, break or shatter your ceramic bowl, making it no longer safe to use. Rustproof and rubberized bottom: Made of real stainless steel. If properly cared for, your stainless steel dog bowl will last for years. Ordinary metal bowls try to pass themselves off as stainless steel, when they are actually ordinary steel (carbonsteel) and will rust in no time. The added non-slip rubber rim on the bottom prevents the dog bowl from sliding and reduces noise when your dog is eating. Easy to clean and dishwasher safe: Dog bowls made of stainless steel can be easily cleaned with mild dish detergent and warm water. In addition, they can be washed in the dishwasher, making them easy to clean. In addition, the rubber ring can be removedto thoroughly clean these bowls in the dishwasher. STACKABLE DESIGN FOR STORAGE OR TRAVEL: These bowls are thoughtfully and conveniently designed to be stacked on top of each other for easy storage or travel. Durable for long-term use and healthy for your beloved four-pawed animal companion. Size and capacity: 11X15X4CM Packing list: 2* Due to differences in different monitors, pictures may not reflect the actual color of the item. Please allow minor size errors due to manual measurement.