I bought this a few years ago as pajamas, but I only used the pants, so the top is unused and for sale. I washed it once because I planned to wear it. It has three-quarter sleeves, and the folded design and button area are refreshing. It's a thin mesh, made of 80% polyester and 20% cotton, a material that seems to dry easily. The back mesh is 100% nylon. This item has been stored in a closet for a long time. Also, please understand that there may be some folding wrinkles.