This is recovery wear from Re:France. Brand new, unopened. Color: Navy Size: L Retail price: Around 26,000 yen to 27,000 yen From the product description: [Purpose or effect] By wearing this product, the far-infrared effect from body temperature radiation is amplified, providing thermotherapy, improving blood flow, and aiding in fatigue recovery. It also reduces muscle fatigue, relieves stiffness, and alleviates muscle pain. This product can be reused. [How to use] This product is for rest only. Please use it indoors when relaxing or during sleep. #Pajamas #Men's Pajamas