Using your Giro Fixture MIPS II Women's Bike Helmet is easy. First, adjust the Roc Loc® Sport fit system to ensure a snug fit for your head size (50 - 57cm). Put the helmet on your head with the front facing forward. Make sure it sits level on your forehead. When riding, the helmet's Mips® Brain Protection System will work to keep you safe. After your ride, if the padding gets dirty, remove it and hand - wash it with mild soap and water. Let it air dry. For the helmet shell, just wipe it down with a damp cloth. Avoid using harsh chemicals as they may damage the helmet. Also, check the helmet regularly for any signs of damage, and if you notice cracks or significant wear, it's time to replace it.