17 oz. (502 mL) double-wall Stainless Steel vacuum insulated bottle with Copper lining. Designed for use with both hot and cold liquids. Copper lining helps keep your cold drinks colder longer and warm drinks warmer longer; Will keep liquids hot for up to 20 hours, cold for up to 40 hours. Features screw on lid. Hand-wash only. Do not microwave. **CO2 Laser engraving is not available on Silver color**