With a seat height ranging from 16.5" to 21", this height adjustable kids desk chair is suitable for children aged 3-5 years old, 6-7 years old, or 8+ years old. The control lever allows for easy adjustments to meet different needs. The resilient and skin-friendly soft chair cushion consists of high-density sponge and breathable mesh fabric. The SGS class 2 certificated gas cylinder can withstand up to 250 lbs, ensuring smooth and safe height adjustments. Equipped with smooth and flexible PU wheels, the home office kids computer chair can rotate 360° with minimal noise, allowing your child to move freely and easily. In all, this children desk chair is a perfect gift for growing kids.