From the official website: [Size] Diameter 110 x H36mm [Capacity] 225g [Material] Silicone rubber [Retail Price] 1,086 yen Excellent durability and high safety. Good release properties, eliminating the need for release oil. Less sticking to the tray, and easy to clean. Flexible, so you can wash every corner thoroughly, keeping it clean. Can be used over 600 times (manufacturer test). ------------------------- I accidentally bought the wrong size, so it's unopened.