NAYAD® Wai 12 oz Double-Wall travel mug is crafted with 18/8 rust-free stainless steel and a condensation-free , matte powder-coated finish. The wide-mouth lid, made of 100% BPA-free Tritan™ plastic has a color matched silicone sliding lid. Double-wall insulated and copper-lined to keep beverages hot or cold for up to 6 hours. A compact design is compatible with most single-serve coffee makers. Its convenience extends to car and truck cup holders. Hand wash only. Certified by the FDA.