<p>Descriptions: Ergonomic Design: The kid desk chair adopts dual back support and turnover armrests design. The backrest and armrests can well support the kid&#39;s back, waist and arm. The kids desk chair fits kid&#39;s body curves and help kids develop good sitting habits. It is suitable for children aged 3-18 years old. Multi-Size Adjustment: The handle on the right under the kid computer chair seat cushion can adjust the height of the seat between 17-21.7 inches. A knob on the rear under the seat cushion adjusts the depth of the seat. Exquisite Workmanship: The kid&#39;s desk chair is excellent in workmanship. Its main structure is made of high-quality metal and plastic material. The cylinder is strong and durable. Safe and reliable. Comfortable: Both the backrest and seat cushion are filled with thick high-resilience sponge. The sponge has high density and good rebound effect, making your child sit up comfortably. Gravity Self-Locking Wheels: This children&#39;s chair uses gravity self-locking wheels, which can be fixed or moved according to needs, and can be easily switched. The star base supports stably, does not sway, weighs evenly. Improve the stability of children&#39;s use of learning chairs, so they can be used with confidence. The wheels won&#39;t scratch the ground, either. Item Name: Children Study Chair Material: Metal, Plastic Bearing: 150lbs Age: 3-18 Years Old Features: Thickened Seat Cushion, Comfortable Pedal, Dual Back Support Size Details: Total Height: 99cm/39.01&quot; (Approx.) Seat Length: 42cm/16.55&quot; (Approx.) Seat Width: 41cm/16.15&quot; (Approx.) Notes: Due to the light and screen setting difference, the item&#39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Children Study Chair 1 x User Manual</p>