Don't let the heat knock you out. This S-Lab Speed Bob Hat beats the sun at its toughest game and keeps you cool. A reflective shield keeps the heat off the top of your head. Or if you prefer, you can fill the insert with ice cubes! Made with stretch mesh and absorbent cotton, the internal headband stays fresh and holds the hat in place. Advanced Skin ActiveDry technology helps keep your skin dry at all times by moving moisture away from the skin and spreading it across the surface of the fabric where it can quickly evaporate. Also featuring 37.5 technology, removable heat-reflective pad and has reflective branding and piping. Material: Polyester.