This 40-Mini-Muffin Flexipan Nonstick Sheet (336023) can make baking both faster and easier. The mold is made of an extra strong silicone-based woven fabric. It doesn't require greasing, and its flexibility makes it easy to remove the finished product. The material withstands temperatures from -40 to 580 degrees Fahrenheit. The mold is designed to last, and can be reused between 2,000 and 3,000 times before it begins to deteriorate. The large size enables baking up to 40 mini-muffins at once.