This is a book cover made of linen and cotton fabric. The lining is unbleached sheeting. A medium-weight interfacing is applied, giving it a moderate thickness. A fabric band is attached for adjusting the thickness. The bookmark is a satin ribbon. When open: 38cm x 20cm When closed: 14.5cm x 20cm However, the inner dimensions will be approximately 5mm smaller, depending on the thickness of the fabric. ★If you are purchasing multiple items, please let me know in the comments. ✳We will discount 100 yen for each additional item. For example, if you buy 3, you will get a 200 yen discount. If you buy 5, you will get a 400 yen discount. We will ship them together. Larger sizes are available.