Quench your thirst for exposure and publicity with these super-sized beverage bottles! The Siptek 20-ounce tumbler is made of durable stainless steel with high performance double-wall vacuum insulation that maintains the temperature of hot liquids for five hours or cold and refreshing up to 24.The exterior sports a powder-coated finish and a screw-on lid with an articulated carrying handle and a stylish wooden top. Choose from a wide range of colors and add your logo or message to make it your own. FDA approved.