Clear, quick-locking, no-tip food cup that is both durable and dishwasher-safe (top rack only). Made in the USA of non-toxic plastic. Heavyweight enough to stand up even under the toughest beaks. Quick-lock design ensures cup won't tip over. Transparent plastic allows you view food and water levels. Round in shape and 4" in diameter. Holds 5 ounces of food or water. Can be used in your bird's cage, as well as on your Wingdow® Seat. Fits Large Wingdow® Seat only.