The Chill-Its 6605 High-Performance Headband is made with Hi Cool moisture-wicking technology to keep workers comfortably cool and dry on hot days. The Hi Cool performance fabric wicks moisture for quick drying, while the absorbent terry cloth sweatband prevents sweat from dripping into eyes. This low-profile cooling headband can be worn alone or under a hard hat. One size fits most, the back features elastic that stretches to comfortably fit a variety of head sizes. Machine wash as needed and hang to dry. Ideal for construction, landscaping, roofing or anyone working in the heat. It is also a great headband for running, hiking and other recreational activities.