Same sturdy construction as our proven bigger bowls only for our smaller friends. Our bowls are made from bamboo and cooked rice husks bonded together under extreme heat and pressure. All 100% natural renewable resources. You have to touch and feel it to believe it. Looks and feels like the strongest plastic bowl but without the drawbacks of plastic; it"s even dishwasher safe. Will last as long as any plastic bowl. This pet bowl is completely safe for your pet and good for the environment. 3-inch opening, 5-inch base, 1-1/2-inch deep, Blue. Biodegradable made from all natural materials.