Top and bottom set Outer and inner: 100% cotton Filling: 100% polyester These are warm underwear made of a quilted, stretchy material. There is no size indicated on the tag, but I bought them for my family, so I think they are probably around a Medium. I stored them without wearing them. I washed them this time, but There are stains due to aging in three places on the left front of the top (images 5, 6, and 7), and on the left side of the pants, above the calf (image 8). They may not be very noticeable in the images. I'm selling them at a low price because I'm not sure about the size. I would appreciate it if you could understand that these are used items.