NAYAD® Trouper 22 oz Stainless Double-wall Tumbler with Straw is made of 18/304 rust-free stainless steel construction, double-wall insulated tumbler. Copper-lined to keep beverage hot for up to 7 hours and cold for up to 12 hours. Condensation-free surface and fits perfectly in a car cup-holder. Tumbler comes with a metal straw, color matched silicone straw sleeve and cleaning brush. Cup holder friendly. FDA certified.