Louis Garneau Course Bike Helmet Features in-mold construction with 31 vents, inside evacuation channels, and MSB technology for enhanced protection. The Course Helmet is optimized for aerodynamics and is wind tunnel tested. The Spiderlock Pro II stabilizing system provides a customized fit. The XT2 padding is fast-drying and treated to keep you healthy and clean. Meets CPSC, ASTM, and CEN safety standards. Weighs 250g (8.8oz).