Thank you for viewing! These were made with 27mm and 22mm walnut buttons. The back is felt-lined. The elastic can be replaced. I make them carefully, but please understand that these are handmade items and consider this before purchasing. Discount for multiple handmade items: 100 yen off for purchasing 2 items 150 yen off for purchasing 3 items 200 yen off for purchasing 4 items 250 yen off for purchasing 5 items Discounts cannot be applied after purchase, so please be aware of this.