A tumbler with double wall construction for insulation of hot or cold liquids. It has an acrylic double wall tumbler and a thumb-slide lid. It reduces condensation eliminating the need for coasters. It also keeps cold drinks colder longer and hot drinks hotter longer. This tumbler is not microwave or freezer safe. This hydro double wall tumbler meets all FDA requirements and BPA free. Hand wash recommended. Proudly made in USA.