Thank you for viewing! These were made with 38mm and 22mm walnut buttons. Quilt batting is sandwiched between the button and the fabric. The back is felt. The elastic can be replaced. I make them carefully, but please understand that these are handmade items and consider purchasing them. Handmade item bundle discount: 2 items purchased: 100 yen off 3 items purchased: 150 yen off 4 items purchased: 200 yen off 5 items purchased: 250 yen off Please note that discounts cannot be applied after purchase.