Stainless Steel, Polypropylene plastic; 18 oz. (532 mL);Double-wall powder coated vacuum insulated bottle with lid; Lid function: Screw on/off with pop-up tab for drinking; Designed for use with both hot and cold beverages: Keeps contents Hot 6 Hours, Cold 18 Hours; Hand-wash only; Do not microwave; do not place in freezer; CO2 Laser Engraving not available on Silver color; Product Size: 9" h x 2.875" dia.;