Keep your beverages frosty cold with these innovative double-walled freezer mugs. Each 16 oz capacity mug features a unique gel-filled wall design that, when placed in the freezer, creates an effective cooling chamber to maintain your drink's temperature. The durable construction includes a comfortable handle and comes in four striking colors - black, green, red, and blue. Perfect for serving beer, cocktails, or any cold beverage, these mugs eliminate the need for ice that could water down your drink. The thick base provides stability while the wide mouth allows for easy sipping. These freezer-safe steins make excellent gifts and come packaged in a gift box. Simply pre-chill upside-down in the freezer, and they're ready to serve your favorite cold beverages at optimal temperature. The crystal-like interior creates an attractive frosted effect when filled with cold drinks, adding a touch of sophistication to your beverage service.