Thank you for looking. This is a reusable silicone baking mat, also known as a Silpat sheet. It is used by culinary researchers and professional chefs. It prevents uneven baking of baked goods such as cookies, and can be expected to result in a crispier finish! - Size: 40cm x 30cm - Colors: Black and Red - Features: Non-slip design - Material: Silicone The original price was 2500 yen, but I am selling it at a significant discount because I purchased the wrong size.