This is a leg supporter for both legs, famous under the name "Slim Force." I've heard it also supports women after childbirth. I've washed it by hand and tidied it up for sale. It's made with far-infrared radiation fibers, which protect your legs from the cold and help to tighten them. From now until early summer, wear it under things like your home jersey pants for warmth and as a supporter for your diet. This fabric tends to pill easily, but it's not a sign of deterioration. If you're concerned about this, please refrain from purchasing.