Inland NINJA Gaming Chairs features hand-selected premium materials as well as a robust design for even the most aggressive gamers. NINJA is developed for maximum comfort and flexibility featuring a wide range of ways to customize the position and fit to your liking. NINJA Gaming Chairs feature: Foam covered rigid tubular steel interior and durable external materials. Supportive and comfortable cold cured molded foam. Ultra-quiet nylon wheels for smooth gliding. Class-4 hydraulic piston for precise height adjustments. Incredibly soft and supple leatherette for a premium look and feel. Aluminum alloy base for long-term use. 4D adjustable armrests for personalized comfort. 165 degrees of reclining and full tilt capability. Microfleece breathable memory foam headrest and lumbar pillows.