Thermos vacuum insulated stainless steel 290ml Food Jar. Thermos vacuum insulation virtually eliminates temperature change by creating an airless vacuum space between two stainless steel walls. A superior insulated container you can depend on to keep your beverages hotter, colder, fresher, longer.Unbreakable stainless steel interior and exterior Non-slip, scratch-resistant baseCool to the touch with hot foodsErgonomically designed lidLight, compact and portable.