Features: Made of grade high-quality aluminum foil material, BPA and eco-friendly. Widly temperature from -40 degrees to 230 degrees. Suitable for microwave oven, oven and refrigerator. Designed with non-stick surfaces, quick and easy to demould. Perfect for making muffin, cake, cupcake. Easy to clean, non-stick, easy to clean. Specifications: Material: Aluminum Foil Size: Detail Sizes in the Pictures Package Includes: 50x Aluminum Foil Cake Cups note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.