Tall 400ml BPA-free double wall coffee cup which will keep drinks hot for longer. It is features a patterned stainless steel outer wall and a polypropylene inner wall. Corvette has a secure screw on lid with a splashproof flip closure and a soft non-marking base. The gunmetal colour laser engraves to a shiny steel finish and the stainless steel colour engraves to a natural etch. This product is not dishwasher safe and handwashing is recommended.