The Bjorn mug is made with RCS certified recycled stainless steel and the handle is made of responsibly sourced beech wood. The copper vacuum insulation in the mug helps to keep drinks at their ideal temperature for a long period of time. This mug is a great alternative to traditional mugs, designed to help to prevent heat transfer to the outside of the mug. Tested and approved under German Food Safe Legislation (LFGB) and for Phthalates Content under REACH. Capacity: 360 ml. BPA free.