Plastic "u"-shaped crown clip. It's translucent, so you can work without removing the clip even if there are characters under it. I have several, so please comment if you want to buy in bulk. [Product Description] ⚪︎ Securely opens pages and holds them in place! A convenient "u"-shaped crown clip that makes studying, cooking, playing music, and working much more comfortable. ⚪︎ Designed to avoid the center of the book, making it difficult to crease the pages. The structure avoids the spine of the book, so the pages are less likely to crease and can be opened beautifully again and again. ⚪︎ Suitable for a wide range of uses. Suitable for thick books such as sheet music, recipe books, reference books, textbooks, and instruction manuals. Eliminates the stress of pages closing while reading, studying, cooking, or working! ⚪︎ Translucent design that doesn't obstruct your view. Clear color makes the text easy to see and blends naturally with any book. [Size] Length: Approximately 7cm / Width: Approximately 12cm / Opening width: Approximately 8cm [Contents] ・"U"-shaped crown clip body ・Color: Clear (translucent)