Durability: Built to last; hard wearing foam and PVC leather Healthy: Healthy material EU standard, no smell, no harmful amount of substances Safty: Integrated steel framework, class-4 hydraulic gas lift, high-strength aluminium base High density neck & lumbar pillow Adjustable back offering 5 modes HIGH QUALITY CORE MATERIALS- Highly stain-resistant, durable and scratch-resistant- same material and original design as Race Car Seat, offering years' use without scalling.VELOUR HEAD PILLOW & LUMBAR SUPPORT CUSHION- Anda Seat Ergonomic Design Neck Pillow and Lumbar Support Cushion would help You sit straight in the right posture.- They not only make it easier to focus on your work but also take care of your health.4D ADJUSTABLE ARMRESTS- The purpose of armrests is to rest your arms- Nothing would do a better job than Anda Seat highly adjustable 4D armrests.- The surface Is covered by PU, support the forearm to relieve wrist pressure and muscle strain - which maximum your gaming experience