Rockboard M.Y. Products LLC Scooter 2-in-1 scooter that combines shredding scooter with kick scooter Advanced Rockboard propulsion technology with steel power-drive chain Rear spring-enhanced suspension creates smooth ride on unforgiving pavement Nylon-reinforced spokes and super-tough urethane wheels Folds for easy storage; adjusts from 36 to 46.5 inches tall; 90-day warranty