The BioCool™ Cooling Towel instantly cool body temperature up to 30° and regulates body temperature for up to 4 hours. Use during and after workout to wick away sweat and cool your body temperature up to 30°. Stays cool for up to 4 hours. Can be used to regulate body temperate for the gym, yoga, cycling, outdoors, hiking, fishing, climbing, golfing, gardening and more. Made with absorbent and hyper-evaporative PVA material that holds more water and creates a long lasting cooling effect.