The specialized align commuter helmet has been designed for simplicity you donrsquot need to measure your head to find out which size you need as one size fits all the headset sx fit system has a micro adjustable dial to give you easy adjustment and a perfect fit for a wide range of heads the 4th dimension cooling system offers optimal airflow to keep your head cool in warm conditions this commuter helmet features a tri fix web splitter which makes strap adjustments easy and it also i