Use of silicone, they are flexible and soft, firm structure, corosion resistances, rusty, easy to clean Gumpaste silicone mold can be used in Dishwasher, Microwave, Oven, Refrigerator, Freezer Gumpaste flower, fondant flower making, flower cookie cake decorating, clay modeling, soap decorations Easy to Use: Silicone veining mold can press flower and line more real more easier Fondant flower silicone rose flower petal mold have been rigorously tested All are safe, suitable for daily use