Tie Dyed Shop Rainbow Guitar Tie Dye Shirt for Men Women 100% heavy weight cotton (6.1 oz) and pre-shrunk. Men should normally order 1 size larger. Will last a long time with cold water washings. We use pdf (cotton) stitching which absorbs the dye also. Some vendors use cheaper lightweight shirts with nylon stitching which does not absorb the dye. This item is frequently purchased for personal use and as a gift. Plus sizes available.