Tie Dyed Shop Extreme Rainbow Tie Dye Lounge Pants 100% heavy weight cotton and pre-shrunk; satisfaction guaranteed. Will last a long time with cold water washings. We use pdf (cotton) stitching which absorbs the dye also. Some competitors use cheaper lightweight fabric with nylon stitching which does not absorb the dye. This item is frequently purchased for personal use and as a gift. Extended sizes available.