Recoverypro Lab Recovery Wear, Size L Color: Black Long-sleeved roomwear set New, unused From the official website: "Recovery Wear," which uses fibers with fixed ceramics, is a genuine recovery item registered as a general medical device. This special fiber absorbs far-infrared energy released from the body and radiates it back. It promotes blood circulation and reduces muscle stiffness and soreness, leading to fatigue recovery. In addition, it uses a smooth fabric of 80% polyester and 20% cotton, and wearers are constantly saying, "It feels good to wear" and "I wear it every day!" The more the contact surface between the ceramic-infused fabric and the skin increases, the more effective it becomes, so wearing it as a set is recommended. "This product is a medical device in the form of clothing, designed to improve symptoms such as fatigue and muscle stiffness through the blood circulation-promoting effects of far-infrared radiation, which is achieved by fixing high-purity ceramics to the raw material fibers and radiating a certain amount of far-infrared rays." - Brand: Recoverypro Lab - Size: L - Color: Black - Style: Long pants and long-sleeved top - Model: Top and bottom set Thank you for viewing.