The SENSO® Classic 10 oz Vacuum Insulated Stainless Steel Wine Tumbler is made of 18/8 stainless steel with a powder-coated matte finish and features copper-lined double-wall insulation with condensation-free surface. Keeps beverage hot for up to 4 hours and cold for up to 12 hours and has a push-on, clear acrylic lid with a sip-thru opening. It is BPA Free and FDA certified. Hand wash only.