Impressive 500ml double wall, vacuum insulated stainless steel mug with a smart powder coated matt finish. It will keep drinks 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 taking soup and food to work or school. The mug is BPA-free, laser engraves to a stainless steel finish and is presented in a black gift box. This product is not dishwasher safe and handwashing is recommended.