Today this tradition continues with an array of products for every purpose. The Grande Travel Tumbler has an unbreakable 18/8 stainless steel interior and exterior and will withstand the demands of everyday use. The Thermax® vacuum insulation virtually eliminates temperature change by creating an airless vacuum space between two stainless steel walls. The result is an insulation layer that performs better than any other. A superior insulated container you can depend on to keep your food and beverages hotter, colder, fresher, longer.