The Chill-Its 8935CT Hi-Vis Sun Hat is a lightweight and breathable sun protection hat with advanced PVA cooling technology lining the rim for relief in extreme heat. This 150D polyester sun hat features a wide brim for complete face and head coverage, while 360-degree mesh venting maximizes airflow for breathable comfort. The hi-vis colors and 1" reflective tape are ANSI 107-approved to keep workers safe and seen. 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 cooling ranger hat is comfortable and refreshing for even the hottest days of the year.