How to use: Put the helmet on your head and adjust the Headset SL II fit system to your preferred height using the six positions and fine - tune it with the micro - adjustable dial. Then, use the Tri - Fix web splitter to adjust the straps for a comfortable fit. Make sure the helmet sits evenly on your head. Things to note: Always check if the helmet meets the U.S. CPSC Safety Standard before use. Replace the helmet if it has been in a crash or shows signs of damage. Maintenance: Clean the helmet with mild soap and water. Avoid using harsh chemicals. Let it air - dry. Keep it away from direct sunlight and extreme temperatures when not in use.