Haers Thermal Food Jar has a Korean Posco 18/8 Stainless Steel body for better heat retention. The vacuum insulation helps in keeping food hot or cold for up to 12 hours. This design is extremely sturdy and useful for storing hot and cold food items. Now enjoy hot & cold fresh food on the go. Thermal Food Jar is made in 304 18/8 quality stainless steel. Use our product for your all day needs of hot or cool food items.