This double-walled tumbler offers all the benefits of stainless steel and can be enjoyed with legendary and beloved exclusive Tervis designs. Up to 24 hours cold and 8 hours hot. Double-wall vacuum insulation stainless steel with leak resistant & easy-close lid. Do not put tumbler in dishwasher, freezer or microwave. Hand wash with soap (no bleach or chlorine) & water using a scratch-free sponge. Tumbler designed & decorated in Venice, FL., basic blank tumbler made in China. Limited 5-year warranty.