A Batman logo pilsner glass *frosty mug* that you can freeze before use. The inside surface of the glass has a coolant effect with a crystalized look to it. The perfect way for a modern day superhero to enjoy a coold beer! Officially licensed Batman product from Spoontiques.****For the best results- place your the glass straight up in freezer compartment of your refrigerator for 2-4 hours- when coolant appears frozen- remove it from freezer and fill with your favorite drink. Feel free to freeze and re-freeze again and again. ***** measures 9 x 3 inches*** Holds 16 Oz