This "fatigue recovery wear" incorporates ceramic-embedded fibers and is a genuine recovery item registered as general medical equipment. These special fibers absorb far-infrared energy emitted from the body and redirect it back. By promoting blood circulation and reducing muscle stiffness and soreness, it leads to fatigue recovery. In addition, the smooth fabric made of 80% polyester and 20% cotton has users raving, "It's comfortable to wear" and "I wear it every day!" Since the effects increase the more the ceramic-infused fabric contacts the skin, wearing it as a set (top and bottom) is recommended. "This product is a medical device in the form of clothing, intended to improve symptoms such as fatigue and muscle stiffness through the blood circulation-promoting effects of far-infrared rays, achieved by fixing high-purity ceramic to the raw material fibers and emitting a certain amount of far-infrared rays."