This hip flask is made of stainless steel. This handy container features a tethered screw on/off lid and will make an outstanding giveaway for any party or event. It is designed for use with cold and room-temperature liquids only. It is dishwasher safe, but we recommend hand washing imprinted product. Do not microwave. Caution: item may leak if tipped or held upside-down. Imprint your exclusive logo, everyone who uses it will know your company name. Price for over 15000 pcs is for sea shipment.