NAYAD® Metro 20 oz Stainless Double-wall Mug features a 18/304 stainless steel construction; powder-coated matte finish; and wide-mouth lid is made of BPA free Tritan™ plastic with silicone sipping cap. Mug is copper-lined to keep beverage hot for up to 10 hours and cold for up to 20 hours. The ergonomic wide stainless steel handle for strength and durability. Condensation-free surface with compact size designed to use with most standard single serve coffee makers. Hand wash only. FDA certified.