Double-wall vacuum thermal mug of high-grade stainless steel. Keeps drinks hot and cold. With a tight folding closure and removable handle. 5-year warranty.The double-wall thermal mug CONSTANT is made of high-grade stainless steel both inside and outside; it has a removable handle for right- and left-handed use and a perfectly sealing closure. It preserves drinks hot or cold in the long term, it is excellent for serving drinks in travelling, in the office, etc. It is unbreakable in normal use. 5-year warranty.