High-Performance Dew Rag helps maintain a healthy body temperature at work. Use in construction, landscaping, assembly, iron/steel fabrication and more. The Hi Cool moisture management performance fabric keeps moisture away from your head so you can stay cooler. Elastic band allows a secure, good-looking fit. The design also includes an absorbent terry headband. The Chill-Its rag is comfortable to wear under hats, helmets or alone.