Our 36 oz. Tritan (TM) Mountain Bottle is molded with BPA-free Tritan (TM) material and is union made in the U.S.A! Measuring 3 1/2" x 9", these beverage holders feature a tethered lid, rigid wall construction for multiple use and will not retain odor or flavor. Dishwasher safe and individually polybagged they ship assembled at no extra charge! Ideal for wellness events, sport venues and athletic team sponsorships. Do not microwave!