Yonex 70102Y Uni-lined Wind Warmer (fit style) (JP)

Heated with infrared rays, it's warm. A heating system that converts infrared rays emitted from sunlight and the human body into heat and traps the heat within the fibers. When exposed to infrared rays for a certain period of time, the surface temperature is about 3 to 7 degrees Celsius higher than with conventional cold-weather materials.

Antistatic technology is featured in Yonex's tennis apparel to prevent static electricity from occurring. Carbon impregnated conductive fibers are woven into the stitching of the material to remove the build-up of static electricity. This allows you to comfortably wash/dry your clothes regularly and play on court without fear of an electric shock.