HIGH MATERIAL SILICON: Professional quality ice cube tray is made from food grade, FDA Certified Flexible high quality Silicone, Non-Toxic, Harmless to human bodyHeat resistant and easy to wash. DIY ice cube mold packing includes: Equipped with 2X (black and purple) and 1X 5ML scale silicone dropper. Silicone ice tray molds with 4 skull bones, ice tray mold size: 11.2*4CM, forming size: 3*3.8CM. WIDE APPLICATION:Skull shape makes your parties stunning, large chioce for halloween party, birthday, party, kitchenbars, restaurants, , holiday events or holiday gifts. MULTI USE:Silicone provides flexible molds for a variety of uses. the novelty large square mold shape can be used to freeze soup bases, chocolates, ice coffee, juices for popsicles, whiskey, cocktail, ice tea, fruit juice, soda pop and cola.