Road bike helmets generally feature lightweight aerodynamic designs which help reduce wind resistance and provide ventilation around the rider’s head. Road bike helmets are designed to feature more air vents compared to other helmets such as mountain bike helmets, helping to improve airflow. Shop the best range of road helmets from quality brands. You can be sure you're buying the best helmet at the best price with our Best Price Guarantee. Shop online with click & collect and delivery, and in store at your local 99 Bikes in Auckland, Christchurch & Wellington.