John Boy USA Top Mat Heat Guard Cooling Towel is a versatile towel that can be used to cool you down and absorb any sweat as you are working in outside conditions. This towel, made of 100% polyester, features a reversible design that when dry, is soft and absorbent, and when wet, keeps you cool for hours. To activate cooling technology simply soak in water, wring out and snap three times. To reactivate, re-soak and re-snap. If being used outside, this cooling towel also provides UPF 50 sun protection. Reusable and machine washable, this towel is a chemical-free way to stay cool while also providing you with UV protection. Measures 12 x 39 in.