made from FDA-approved food-grade silicone, is tough enough to withstand oven temperatures up to 500 degrees Fahrenheit and freezer temperatures to -50 degrees Fahrenheit. this aptly named product holds its shape for baking and also folds and bends to release baked foods easily. The silicone surface absorbs hat and transfers it to the foods being cooked. Baker's Secret Flexible silicone bake ware is microwave safe, allowing you to cook or reheat foods quickly and easily, dishwasher-safe and easy to store.