Eco To Go Hot & Cold Stainless Steel Drink Tumbler - Double Wall -16oz. Capacity - Blue These Rugged yet Stylish Tumblers are great for the daily use of all your hot & cold beverage needs. BPA Free Stainless Steel Construction of Cup Housing and Screw on Lid, with rubber gasket seal. Double wall insulation keeps your liquids cold while minimizing condensation "sweat" on the outside of the cup, as well as protecting your hands from the heat of the contents inside. Reusable plastic straw included, tumbler lid features a see through window and will accept standard 8mm. size straws. Tumbler Body is Diswhasher safe. Please hand wash lid. Not for microwave or freeezer use.