Material: Akoya shell Sizes: As follows Due to the natural material, there may be some unevenness. Compared to other shell buttons, they are slightly thinner, but I don't think there are any problems with the strength. 30mm → 180 yen 25mm → 65 yen 23mm → 50 yen 20mm → Sold out 18mm → Sold out 15mm → Sold out 13mm → Sold out 11.5mm → Sold out 10mm → 10 yen This is the price for 12 of the 23mm size. * The above price is per button. You can combine them with other sizes in any quantity you like. Please let me know in the comments. I will create a dedicated page for you. * Please make sure the total amount is 500 yen or more. * If you purchase 1000 yen or more, you will receive a 10% discount.