This 30 oz. tumbler is made from 18/8 powder-coated stainless steel and features a copper lining for excellent insulation. It comes with a stainless steel straw and detachable silicone spout for easy cleaning, along with a straw cleaning brush. Designed for convenience, it fits standard cup holders and keeps drinks hot for 6 hours or cold for 12 hours (avoid using the straw with hot drinks). The tumbler is not microwave safe and should be hand washed to maintain quality.
