The cooling scarf is a great way to cool down yourself during the hot summers or while enjoying indoor, outdoor activities and sports.Made of soft fabric with a self-cooling and long-lasting cooling gel.Each measures about 39 x 2 inches. Soak the cooling band in water, wait until it expands to the extent you want, take it out of the water.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. It's perfect for running, jogging, hiking, biking, working outdoors, gym exercises, etc. It's also great for headaches, sore muscles, and hot flashes.