Mounts both polyurethane wheels and aluminum rims with high pressure pneumatic tires on the same steel frame. This is the new adult ride for comfort and deep carving fun. 7Ó Poly urethane wheels on the rear are generally better to learn on, so if you are more or less a beginner, this is a great place to start. The 8Ó Air tire on the front means improved traction and a sticky-er and smoother feel while carving. Once you've mastered the carving and you want to expand your riding to rougher pavement, just order up a pair of air wheels and swap them out! Mounts 7Ó poly, 8Ó poly and 8Ó air tires. Suggested Weight Limit 250lbs