Quoted from the Yonex HP ↓↓↓ Very Cool Cooling sensation of -3°C with xylitol effect. Natural xylitol, made from trees and plants, is used in the fabric. It reacts with sweat to absorb heat, lowering the temperature inside the garment by approximately 3°C. I think the color in the fourth picture is close to the actual product. (This is just the seller's personal opinion.) Red is also available. If you buy two, I'll sell them for 3000 yen (＾＾)