Universal seat: continuously adjustable and compatible with standard hoverboards from 6.5 to 21.5 cm (e.g. B. BE COOL BCBB6522RB/BCBB6522KBK). Grows with: telescopic pole for a length of 68 to 90 cm - perfectly adjustable height, ideal for children. EASY CONTROL - Accelerates and brakes with easy to use levers, easy steering with two control levers. DURABLE CONSTRUCTION - Bucket seat made of high quality plastic provides a comfortable and secure grip. COMPLETE KIT: Includes installation tools and instructions - quick to install, ready to use.