Retail price: 8800 yen YONEX Tennis Junior Lined Wind Warmer Shirt 70105J Equipped with Heat Capsule technology. Warms up with infrared rays. A charging system that converts sunlight and infrared rays emitted by the human body into heat, trapping the heat inside the fibers. When continuously irradiated with infrared rays for a certain period of time, there is a difference of approximately 3 to 7°C in surface temperature compared to conventional cold-weather materials. Material: Outer fabric / 100% polyester, Lining / 100% polyester Specifications: Heat Capsule, anti-static, reflective, water-repellent, hem spindle specification I bought this new, but I made a mistake with the size, so I am selling it. No price reduction. Will be compressed for shipping.