Heat retention (6 hours): 31 degrees Celsius Cold retention (6 hours): 14 degrees Celsius This is written on the product. A 290ml stainless steel thermos with a design that excels in both cold and heat retention. It's a convenient size for the coming season. The top part comes off, making it easy to clean. It seems like it could also be used as a regular mug. It's described as beige, but it feels more like a mocha beige. It's a lovely color. Recommended for those who like MUJI, etc. - Brand: Malutto - Model Name: Thermo Stainless Bottle - Capacity: 290ml - Material: Stainless steel Thank you for viewing.