I purchased this sample item at a store, but my body shape has changed, so after trying it on, I washed it and kept it in storage. The size is 38, which is a Japanese M size. It's made ofサッカー生地 (soccer fabric), which has some stretch and is comfortable to wear. It will be useful for the upcoming seasons, spring and summer, so I hope someone who will wear it will take it... It's made in Japan, well-constructed, and has a lining, so there's no need to worry about transparency. Thank you for your consideration. *I am also selling other pants. Please take a look if you'd like.