The Anzio bottle has a 23 oz. capacity with double wall construction and an 18/8 stainless steel inner wall. The double wall vacuum keeps your drink hot for 12 hours and cold for 24 hours. It has a leak-proof screw-top lid with an integrated handle that makes the bottle easy to carry with you. Use this bottle at work, on long walks and when working out. It fits in most car cup holders and is FDA compliant and BPA Free.