This extremely stable and maneuverable upright three-wheel handcycle is kid sized and safe for even the first time cyclist. The 7-speed hub, with reverse braking, allows your child's hands to never come off of the cranks. With fully adjustable chain tension idler, there is no need to add or remove chain links with crank height adjustments. Perfect handcycle for kids between the ages of 5 to 15 or small adults and who are between 42" to 62".