The Chill-Its 6700CT Cooling Bandana features advanced PVA cooling technology for relief in extreme heat. Lightweight and low-profile, this bandana is perfect for wear around the neck or under hard hats. A tie closure in the back makes for an adjustable, snug fit on a variety of head sizes. Heat-related illness continuously ranks among the top causes of worksite accidents and fatalities. Evaporative cooling technologies such as PVA (polyvinyl alcohol) are a simple, effective and comfortable solution for heat stress prevention. Similar to how sweat cools the body, evaporative technologies use an external water source to draw heat away-helping to regulate body temperature while providing cool relief. When activated, this PVA cooling bandana is comfortable and refreshing for even the hottest days of the year.