Double-wall vacuum insulation keeps cold drinks cold and hot drinks hot until the last sipNo sweat design say adios to damp or frostbit fingers.Duracoat color no scratching, peeling, or fading hereDishwasher safe because who needs more work to do18/8 stainless steel made with kitchen-grade stainless steel, so they’re puncture- and rust-resistantProduct Dimensions: 3.5 x 3.5 x 7 inches ; 12.6 ounces Shipping Weight: 15.2 ounces