Timeless Swiss Peak design is evident in this smart 350ml double wall, vacuum insulated stainless steel cup with a smart powder coated finish. Stealth will keep drinks hot or cold for hours and features a secure screw-on lid with a push-button activated flip closure which is spring loaded for smooth, effortless operation. This precision cup is BPA-free, and laser engraves to shiny steel finish. It is presented in a Swiss Peak gift box with an information leaflet. This product is not dishwasher safe, and handwashing is recommended. Materials: Cup: 201 Stainless Steel Outer, 304 Stainless Steel InnerLid: Polypropylene (PP) and a Silicone Seal