Our 16" HD Fast Action Scooters include 4" Roller Blade wheels made from a non-marring material suitable for use on any surface, even carpet.  Each scooter includes hand protectors on 2 sides. Scooters with Roller Blade wheels sit higher off the floor, potentially making them easier for older children and adapted P.E. Sitting area measures 16" x 16". Weight limit 175 lbs. . Sold individually (shipped in assorted colors) and in a set of 6 consisting of 1 each of the following colors: red, orange, yellow, green, blue and purple.