Support healthy posture and focused learning with the Costzon Height-Adjustable Kids Desk Chair. Designed to grow alongside boys and girls aged 6 to 15, this ergonomic computer study chair features a smooth pneumatic gas lift that adjusts seat height from 17" to 21.5" (43.2 to 54.6 cm). Built with a curved lumbar-supporting backrest, breathable nylon mesh upholstery, and innovative weight-activated sit-brake casters, it delivers the ideal balance of everyday comfort, safety, and durability for homeschool or study spaces.

Key Features:

• Smooth Height Adjustment: Premium Class gas lift lever adjusts chair height smoothly from 31.5" to 36" (80.0 to 91.4 cm) to fit desks and match children's growing heights.
• Ergonomic Spine Support: Contoured backrest aligns with natural spinal curvature to relieve muscle fatigue and encourage healthy sitting habits during long homework sessions.
• Weight-Activated Sit-Brake Casters: Five durable PU casters automatically lock in place when pressure exceeds 55 lbs (24.9 kg) to prevent distractions and sliding, and auto-release when the child stands up.
• Breathable Nylon Mesh Upholstery: High-tension, skin-friendly mesh fabric over resilient sponge ensures optimal air ventilation, heat dissipation, and cushion support.
• 360° Smooth Swivel: Full-rotation seat allows children to easily change directions without dragging the chair, protecting hardwood and carpet floors from scuffs.
• Heavy-Duty PP Base: Reinforced structural frame supports up to 330 lbs (149.7 kg), ensuring dependable long-term stability throughout the school years.