Using your MET Parachute MCR helmet is easy. To switch between full - face and open - face modes, simply use the Magnetic Chinbar Release. Just pull or attach the chinbar as needed. When wearing the helmet, make sure it fits snugly on your head and adjust the straps for comfort. For safety, always wear the helmet when riding your bike. To keep your helmet in good condition, clean it regularly with a mild soap and water. Avoid using harsh chemicals that could damage the helmet. Store it in a cool, dry place away from direct sunlight.