Giantex Kids Desk Chair, Armless Kids Computer Chair with Lumbar Support, Mesh Adjustable Swivel Study Chair with WheelsErgonomic Support: This kids desk chair is designed with an S shaped backrest that provides full support to the back and lumbar region, promoting improved sitting posture during long office hours and study sessions. Its hollowed surface increases airflow and reduces heat buildup for added comfort. Flexible Height Adjustment: Easily customize the seating position with the kids computer chairs adjustable seat height, which ranges from 16" to 21".