Rolo Premium top-dye tank tops are made with 100% cotton. They will not shrink, as they are pre-washed. The "TOP-DYE" names comes from a special process of which the tank top is dip-dyed from the top. The fit is unique to Rolo with wide tank bands at the shoulders and perfectly contours the body. A staff favorite for gym-goers. The top dye process makes the color look a lot more natural than uniform colors. Go true to size for a comfortable fit, or a size or two up to show some skin.