Ergonomic Design Urges Right Posture: This kids desk chair has a back with Y-shaped lumbar support and a deep seat to reduce the fatigue caused by long-hour sitting and studying. It also encourages the kids to form a right sitting posture. Besides, the armrests give extra support to the body. Height Adjustable Function: Featuring a premium gas rod, the kids computer chair lifts up and down from 31.5 to 36 with just a press on the adjusting lever. It keeps up with the growing kids at different heights and allows your child to set the task chair in the most comfortable form, suitable for kids and teenagers.