The KICKR HEADWIND is a smart fan, designed with the cyclist in mind. Its Targeted Airflow Pattern mirrors the shape and position of a cyclist's body while riding. The KICKR HEADWIND is sensor controlled so as your speed or heart rate increases, so will the fan speed, and there are also 4 manual speed settings should you want to set your own ideal airflow. With speeds of over 30 mph (48 kph), the KICKR HEADWIND will keep you cool during the toughest training sessions.