Come and see our amazing products. This mug is powder coated with a stainless steel outer & inner wall, copper lining, and double-wall vacuum insulation. Keeps your drinks hot or cold for up to 12 hours. Features a sip-thru lid with a rubber gasket. BPA free, sweat resistant. Hand wash recommended. Pls confirm with us about the packing info, stock color and exact production time before placing your order.