Made of superior 304 Stainless steel material, and built with double-wall,puncture resistant,rust resistant and durable,will last for years. Designed with Anti-skid rubber bottom details, heavy enough. So the bowl is not easy to move or bring down and can reduce noises while your dog eats. The bowls are BPA FREE and keep smooth inside so it is non-toxic and won't scratch the dog's tongue and mouth.Corrosion resistant to various acids found in foods. Perfect for kibble, water, milk, and prime cuts. There are no chemicals that can migrate into your food from these products .For you friend safe eating and drinking.