Smart 350ml BPA-free double wall coffee cup with a timeless curved design and a secure push on lid. It has a stainless steel outer wall and a polypropylene inner wall which keeps drinks hot for longer. Cordia has a soft non-marking base and laser engraves to a shiny steel finish except for the stainless steel cup, which engraves to a natural etch. This product is not dishwasher safe and handwashing is recommended.