FUEL™ TRIPLE VENTED MODULAR HELMETS Triple Vented Modular Helmets put the best in aerodynamics and safety on your head! European-style inspired helmets feature a sleekly designed thermoplastic shell with a pivoting chin bar and face shield that lift for easy conversation. Innovative triple vented system pulls air in for maximum air circulation and a one-touch fingertip adjustable top diffuser pulls air out of helmet to prevent fog ups.