Built with you in mind the anda seaT Dark Demon Dragon is designed for those long gaming sessions. Rigged with premium PVC leather and high-density one-piece memory foam. The luxurious ergonomic design guarantees all-day comfort with a H-shaped headrest pillow and large lumbar cushion. The 4D armrests for optimum posture support. Adjust the height with high performance Hydraulic Nitrogen Pistons.