The best scooters on the market. 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. Made for indoor PE and gym class. Set includes 1 each of the 6 Spectrum colors: red, orange, yellow, green, blue and purple. Each scooter supports up to 200 pounds.