Klein Tools K12 Series Carbon Fiber Hard Hats are constructed using multi-layered interlinked carbon fiber giving them the best low weight to high-strength combination. They feature large adjustable vents not found on other carbon fiber hard hats to stay cool in the heat. A balanced 6-Point suspension with removable, washable padded sweatband and top pad is designed for a secure fit and long-term comfort. Select K12 Series Carbon Fiber hard hats come with Klein Tools accessory mounts on the front and back for attaching Klein headlamps, fans, and other accessories: no strap needed