Premium 500ml Swiss Peak double-wall, vacuum insulated stainless steel mug with a smart powder-coated finish that will keep drinks warm for hours. Stealth has a wide top opening with a secure screw-on lid and a push-button activated flip closure which is spring loaded for smooth, effortless operation. It is ideal for coffee as well as making soup and food to work or school. This precision mug is BPA-free, and laser engraves to a 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.