Cool Offs are neck or head wraps designed to protect and provide comfort for workers who function in environments with excessive heat. They feature distinctive non-toxic cooling crystals that are activated by water, allowing this composite to absorb and lock in water to cool from 24 to 72 hours. Reuse by simply soaking in cold water for 10 to 15 minutes. For an extended cooling effect, refrigerate. Lightweight and comfortable, Cool Offs are 38 inches long and can be worn around the neck or tied as a headband. Attached closure allows for a secure fit. The outer shell is 100% cotton and comes in seven colors and patterns.