For modern families on the go with two kids, the Double Helix Stroller Frame is Orbit Baby's complete double stroller solution. With two SmartHub rings, parents now have the option to stroll with multiple combinations of Orbit Baby seats (infant car seat, stroller seat, bassinet, and toddler car seat sold separately), making it perfect for siblings, twins, and growing families. Front and back rotating seats mean siblings can interact while strolling, and the swiveling double seat makes it easy to help your child get in and out. With just a couple of clicks, the frame converts on the fly into an uncompromised single stroller to fit your changing family life. The patented QuadShock suspension on all wheels gives the stroller a plush ride, and the narrow 6 wheel maneuverable frame easily navigates through narrow doors and aisles. The stroller's compact, nested 3D fold fits in many different trunk spaces, and its smart storage options include a large under stroller basket, two cupholders, a smartphone slot, and the ShadePad tablet pocket. It also features a custom black finish aerospace grade aluminum frame, 3 position telescoping handlebar, and hassle free, no pump tires. The Double Helix Stroller Frame is compatible with Orbit Baby's stroller accessories, including the Sidekick Stroller Board (when in single mode) and Stroller Panniers. It meets CPSIA [HR4040] and ASTM F833 11.