Swiss Peak gifts are of the highest quality with outstanding design and this 500ml double wall, vacuum insulated stainless steel flask is certainly no exception. With its flowing curved body and efficient push button operation, beverages canâ€™t help but taste better when poured from a Swiss Peak Vacuum Flask. It will keep drinks cold for 24 hours or hot for up to 12 hours. The flask is BPA-free, laser engraves to a shiny steel finish and is beautifully presented in a Swiss Peak gift box. This product is not dishwasher safe and handwashing is recommended.