Thank you for viewing! These were made with 27mm and 22mm walnut buttons. Quilt batting is sandwiched between the buttons and the fabric. The back is felt. The elastic can be replaced. I make each item carefully, but please understand that these are handmade items and consider this before purchasing. Handmade item bundle discount: 100 yen off for 2 items purchased 150 yen off for 3 items purchased 200 yen off for 4 items purchased 250 yen off for 5 items purchased Please note that discounts cannot be applied after purchase.