Stylish 500ml double wall, vacuum insulated stainless steel drink bottle with a gently curved design that is extremely comfortable to hold. It is BPA-free and will keep drinks cold for 24 hours or hot for up to 12 hours. Zircon has a secure screw on stainless steel lid and is presented in a black gift box or optional gift tube. The black and white bottles laser engrave to a shiny steel finish and the silver bottle engraves to a natural etch. This product is not dishwasher safe and handwashing is recommended.