Designed to keep the drivers arms and hands inside the car in the event of an accident or rollover. They will not hinder movement and are adjustable to to provide freedom of movement. The arm restraints are covered in the same fire-retardant materials we use on the shells of our racing suits - not cheaper nylon sold by some other manufacturers.
TO ENSURE AN ACCURATE FIT, use this chart to order your correct helmet size. Carefully measure around your head, above the ears. Take the measurement, in inches or centimeters, referring to the sizing chart below for your correct hat/helmet size. Helmet must fit properly for optimum performance. Don't guess your size. Helmet must be securely and snugly fastened before engaging in any activity.