Ridden by more professional riders than any other wheel, the Root Industries AIR series wheel is the industry’s most popular pick; all at an affordable cost. Root Industries special hollow-core technology places strength and stability where it matters and nothing more. This allows for a super lightweight and robust core. Lab tested and rider approved urethane delivers a smooth ride and a long lasting wheel. Rounding out the AIR Series wheel are elegant finishes and a variety of color options to make your scooter stand out among the crowd.