With special material inside, our cooling scarf can absorb large amount of water to lower down the body temperature, bring human a cool feeling when outdoor activities. Put the solid part of this product into water around 10 minutes. When inner material flows, use your hand to make it even. Don’t screw it heavily, which may damage the product. Put it on forehead, neck, wrist or other suitable position. If it’s not cool enough, use other side of put into water again. No need freeze. The cotton cloth makes cooling scarf much more comfortable.