Multi-Zone Backrest: The Hotrod gaming chair's body-embracing design features a multi-zone backrest anchored to a hard, external FRP shell that provides optimum support for your body where you need it most during high-stress maneuvers. Fiberglass-Reinforced Back Shell: The Hotrod features a unique shell made of PA Fiberglass-Reinforced Plastic. This material is strong, lightweight, and flexible, and is designed to withstand the stress of sudden movements and maintain its shape, ensuring that you remain comfortable and supported through every sharp turn. Ultimate Head and Lumbar Comfort: An ergonomically engineered head cushion to prevent whiplash from sudden stops and a lumbar cushion fixed to height-adjustable suspension rails provide ultimate comfort and support for your neck, head and lumbar region, eliminating risk of injury, tension, and fatigue.