Contoured 350ml double wall travel mug which will keep drinks hot for longer. It has a stainless steel outer wall and a polypropylene inner wall. Aspen has a secure screw on lid with a splashproof sliding closure. It laser engraves to a natural etch and is BPA-free. This product is not dishwasher safe and handwashing is recommended.orange|red|bright green|blue|blackPad Print 45mm x 40mm.|Laser Engraving 55mm x 30mm.Dia 86mm x H 182mm.