Nolan N20 City Helmet (Metal Black/Silver, X-Large) With its cool retro look and great design in graphics, The Nolan N-20 Open Face Helmet is perfect for the casual scooter rider. With a wide variety of styles and sizes and optional faceshields, you are sure to find the one that fits your style. Check them out today!Features. Lightweight polycarbonate shell (less than 3 lbs) with authentic retro Nolan logo. Innovative removable and washable liner is anti-bacterial, anti-fungal and wicking.