My waist size is 67cm. Flat waist measurement is 36cm, length is 54cm. The material is 91% cotton, 7% polyester, and 2% polyurethane. I've worn it once or twice, so there's nothing particularly noticeable, but since it's white, I would appreciate it if you could understand that it's a used item. Instant purchase is OK. If you purchase multiple items, I will consider a discount, so please contact me in the comments before purchasing. Please read my profile before purchasing. I have many other items for sale, so please take a look if you have time m(_ _)m