Ergodyne Chill-Its 6602 13" X 29 1/2" Blue Evaporative Cooling Towel is made of PVA cooling technology to absorb water. It is super-evaporative and feels cooler than ambient air. It gets activated easily when run under water for 1 min and provides quick relief on just wiping off. it is reusable when re-wet and reduces heat stress, fatigue. It finds application during construction, freight/baggage, drilling/mining, iron/steel work, agriculture, solar and landscaping/grounds.