Bottle is sturdy and sanitary, made of FDA-approved, food-grade polyethylene plastic that is durable yet translucent enough so you can see the content level. Nipple is made with a special rubber formula to prolong nipple life and improve pliability. Threaded top for a secure fit. Bottle is 4.25 inch square by 10 inch high, holds 2 quarts. Nipple is 1 inch diameter by 3 inch long. *Bottle is FDA-approved, food-grade polyethylene plastic *Translucent to show content level *Nipple is a special rubber formula that preserves pliability and long life *Threaded top for a secure fit *2-quart capacity
