Reserved shipment on May 12- It is made of the same metal fabric as Metal Velcro Gym Sack product, giving it a sense of unity.It is characterized by a metal texture that spreads subtly.*Notes for exchange and refund- Please check for defects before wearing the item after receiving it.- Due to the increasing nature of the product, it can only be replaced if it is defective.- If there are any signs of trial wear, the value of the item will drop significantly even if it is defective, so you cannot exchange it or refund it.