1. DOUBLE-WALLED GLASS PROVIDES ADDED INSULATION - Double-Walled 16oz Glass Cups come equipped with the added insulation needed to keep cold beverages cold and hot drinks hotter for lengthier periods. Now you can sip at your convenience without concerns over your drink getting too cold or hot before you've had time to finish it 2. PERFECT FOR USE WITH SOME OF YOUR FAVORITE DRINKS - Our double wall cups are perfect to use with some of your favorite beverages, including mixed drinks, cocktails, your favorite brand of beer, or even homemade lemonade and iced tea. Enjoy all your favorites in these durable, insulated beer glass cups 3. MICROWAVE AND DISHWASHER SAFE - These non-sweat glasses are microwave- and to clean in the dishwasher. Not only can you heat your liquid in the microwave while using these glass cups, but you can also make sure to keep them clean and stain- by washing them in your dishwasher at your convenience 4. COMPLETE GLASS SEALED - Unlike other products on the market, our cups are completely glass sealed and have no pin-hole in the bottom construction to keep moisture at bay. As a result, your beverages can stay fresh, and you won't have to deal with excessive glass sweating that quickly leads to stains on tables, coasters, and other surfaces