Made of soft fabric with a self-cooling and long-lasting cooling gel.Each neck cooling wrap measures about 24 x 2 inches. Soak the cooling band in water, wait until it expands to the extent you want, take it out of the water.The longer you soak the scarf, the bigger it will become. For a better cooling effect, put it in the fridge for a while, and you can air dry it for the next time use. Scarf will be cool down after the beads are filled with water. Then tie around your neck, wrist, or head. Suitable for adults, kids and pets, and it is widely adopted as a cooling tool or sunstroke protection in outdoor or indoor activities, like sports, tourism, driving, work in the hot weather and temporary cold storage, medical care and more.