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 size M. They were stored without being worn. I washed them this time, but Image 6 & 7: There are two spots on the left arm. Image 12: There is one spot around the waist of the pants. There is some discoloration due to aging, which is noticeable upon close inspection. It may be difficult to see in the images. I am selling them at a low price because I am not sure about the size. I would appreciate it if you could understand that these are used items. They are thick and won't fit in an A4 envelope, so I will wrap them for shipping.