The Dallas Serving Dish - Fusible Glass Slumping Mold Advanced soft silica gel: food grade silica gel, non-toxic, in microwave ovens, ovens, refrigerators can be used safely, will not break. Wide range of uses: can be used to make ice molds, fruit juice bars, sugar molds, chocolate, ice cream, soap production tools. It's great for parties, beaches, wine parties and holidays. Rich use scenarios: for whiskey, cocktails, iced coffee, coke, tea, juice, beer, soda water. Cool: You can make six skulls in three different shapes to make your drink look cooler and more interesting and your party more exciting. Easy peeling: Soft, non-sticky silica gel is easy to open and peel off from an ice tray.