6 oz. (177 mL) flask with tethered screw on/off lid. Features 304 Stainless Steel body and lid. Dishwasher safe; however, we recommend hand washing imprinted products. Designed for use with cold and room temperature liquids only. Do not microwave. Freezer-friendly. Engraves tone on tone. Caution: Item may leak if tipped or held upside-down