La gourmet® 1.0 Ltr Thermal Ice/Food Carrier stainless steel Materials: 1. Unbreakable 304/18/8 stainless steel from Japan. 2. Available in double walled vacuum pumped stainless steel. 3. Vacuum flask of superior quality finishing and performance. 4. One stop stopper – easy to use. 5. Could keep hot or cold up to 24 hours for thermal flask and 6 hours for food carrier and tumbler.