The best scooters on the market. Our Spectrum scooters are made of a durable high-impact polyethylene with non-marring casters. Grasp inside the hand protectors to shield fingers and hands from other scooters during play. 16 size. Wheels are 2 diameter and the bottom of the scooter sits approx. 2-1/2 off the ground. Don't pay a lot and still bring your A Game. That's the Spectrum Difference. Spectrum products deliver superior quality at a price that's easy on your wallet. Tough enough for regular use in the gym or on the playground, great for training, perfect for introducing kids to sports and What a Selection! Get Spectrum and Get Playing!