It is available in four models: Large, Regular, All-Terrain, and Toddler. Order with your choice of Saddle Seat and Curved Back, or gray molded plastic Bucket Seat, which provides a wider base and increased back support for users who do not feel secure riding a traditional saddle seat or who need additional support while riding. The narrow turning radius provides stability and maneuverability. The Regular and Large AmTryke can be set straight ahead, at a 20 degree radius, or at an unlimited turning radius, depending on the individual user’s needs. The All-Terrain’s steering cannot be locked, and due to its free motion and weight, children must be able to power and control steering while riding the Tryke. Each comes complete with a helmet, which all users are strongly encouraged to wear for safety. Features: Rugged rotating handlebars are attached to the same enclosed chain drive as the foot pedals, allowing the rider’s arms to assist the legs in propelling the bike. Three Velcro straps secure the feet to the pedals while torso and pelvic straps secure the rider in the seat. The AmTryke features a wide wheel base with spokeless wheels and semipneumatic tires (Toddler, Regular, and Large) or pneumatic air-filled tires (All-Terrain).