These are long pants from Uniqlo. Size: 110cm Color: Khaki Material: Outer: 58% cotton, 39% polyester, 3% polyurethane Lining: 100% polyester The lining is thin fleece. The waist is elastic and can be adjusted with a button (see photo 4). Worn a few times in winter and then stored at home. I didn't see any noticeable stains or dirt. Thank you.