Registered as utility model, Eco de cool series is woven in part with a special cool yarn and has twice the cooling touch compared to general cotton, helping to cool off just by touching the surface. The series that was first launched as a towel brand now offers a wide range of items such as eye pillows, face masks, and shawls. The cooling effect is further enhanced by soaking the towel in water or using it together with a cold compress, so it is effective as supplement to a fan or air conditioner while also being eco-friendly. Commonly available cooling towels are mainly made with synthetic fibers and do not have the same functions as normal towels, such as wiping sweat and liquids. However, by combining cotton yarn and cool yarn, the manufacturer has developed a cooling towel that absorbs moisture like conventional towels while also having a cooling effect. The towel is also effective for heat stroke prevention and protection from UV rays of high summer for spending the hot and humid summer in Japan comfortably. The product has been recognized as an eco-friendly summer product, and sales have increased every year with over five million products sold since its launch.