Lightweight, super absorbent material provides exceptional cooling power. Just run under cold water to activate. Retains water while remaining dry to the touch. Cooling lasts for several hours. Reusable, just re-wet. Machine washable and anti-mold treated along with UPF 50+ rating. Provides shade protection and cooling relief. Hook and loop closure attaches to hard hat suspension. Packaged in large resealable bag. Blue color. 100 per case. Sold by the each.