How to use: Put the helmet on your head and use the Safe - T DUO Fit System for quick one - handed adjustments. Adjust the vertical height and use the cam navider to get the perfect fit. Make sure it sits snugly on your head. Notes: Always wear the helmet when cycling. Check for any signs of damage before each use. If it has been involved in a crash, replace it immediately. Maintenance: Clean the helmet with a mild soap and water solution. Let it air dry. Don't use harsh chemicals as they may damage the helmet's materials.