Eco To Go Cold Drink Tumbler - Double Wall -20oz. Capacity - Clear These Colorful Tumblers are great for the daily use of all your cold beverage needs. BPA Free Acrylic Construction of Cup Housing and Screw on Lid, with rubber gasket seal. Double wall insulation keeps your cold drink while minimizing condensation "sweat" on the outside of the cup. Reusable straw & stopper included, tumbler lid will accept standard 8mm. size straws. Hand wash. Not for microwave or freeezer use.