Come and see our amazing products. Our cooling neck wrap headbands are made of quality polyester fiber and resin particles, which are light in weight, soft and breathable with good air permeability, bringing a touch of coolness to you for outdoor sports on hot days. All you need to do is soak the middle of the cooling scarf around neck for about 10 minutes to allow the cooling crystals to absorb the water evenly, then gently wring out the excess water for a better cooling effect; It is easy to clean and works in most weather. Pls confirm further with us if any query about packing info, inventory status and time schedule.