These collaboration slacks from UNIQLO and Theory are appealing for their lightweight material. - Brand: UNIQLO × Theory - Size: S - Waist: 68-76cm - Material: 52% Polyester / 48% Composite Fiber (Polyester) Thank you for viewing. I wore these once for a school event and have kept them stored after washing. While I don't see any noticeable stains, please consider that these are used. I think they are very light and easy to wear. The waist can also be adjusted with a drawstring.