Fat Daddio's Silicone Bakeware, Jumbo Muffin-6 Cavity, 2.95-Inch by 2.36-Inch Flexible and versatile; Safe to use in the freezer, microwave and oven FDA approved food grade silicone and durable enough to handle the daily use of commercial kitchens Perfect for baking, mousse, gelatin, ice sculptures, chocolate, craft applications and many more The high temperature technology process that fat daddio's uses to seal their silicone bakeware with creates a surface that is naturally non-stick Temperature resistance to 550-Degree; Jumbo Muffin, 2.95-Inch by 2.36-Inch, 6 cavities