This product suppresses heat on the head in the scorching sun and alleviates the heat. It is used by wetting it with water and placing it inside a helmet or hat. It becomes even colder when wet with water and frozen. 【Size】210 x 210 x 4mm 【Weight】20g 【Material】Polyester, Bel Oasis, Acrylic, Rayon 【Color】Light Blue 【Condition】Used a few times. There are no noticeable scratches or stains. ※ I took photos of both sides, but there doesn't seem to be a front or back. ※ Hot days are still continuing. I am listing it at the lowest price, so how about trying it out or using it as a spare? ※ There are no smokers, but there is a cat. Please refrain from purchasing if you have allergies or are concerned.