Thank you for viewing. This is a set of 10 adult L-size Heattech items, a mix of 100% cotton and other materials like polyester and acrylic. The main brands are Uniqlo and GU. There are no noticeable stains, but they have been worn for several years, so there is some overall wear and tear. Please only purchase if you are okay with this. I want to sell these quickly, so price negotiations are welcome.