The S5000 is truly a gamer's delight and will hit the sweet spot for extreme gamers. The racing-style gaming chair empowers your everyday gaming with the right features. Designed to give a wide range of adjustability that provides gamers with the best comfort and ergonomic support in every position for extended periods of time. The high backrest is created to provide greater neck, shoulder, and lumbar support.

• Effortless assembly
  A patented "slide-in" design mechanical structure that requires no more than one person to assemble.
• Adjustable backrest
  An angle-adjustable backrest helps you to adjust your sitting position throughout the course of your gaming experience (up to 140 degrees).
• Steel frame
  A sturdy and rigid steel frame support ensures long lasting durability, while keeping the chair secure, stable, and comfortable at all times.
• Ultra premium High Resiliency foam
  The interior foam boasts a density that puts it well above the standard High Resiliency foam. This foam stands up to 4lbs per cubic foot, inching it near the realm of memory foam. The elasticity of the foam helps to prolong the comfort life of the chair and adds to the overall durability of the product.
• Adjustable tilt with locking system
  The adjustable tilt tension mechanism allows you to increase or decrease the tension by easily turning the knob to match your body weight. This allows you to rock comfortably, without heavy pushing, and reduces muscle fatigue.
• Coffee ground microfiber
  The chair's backrest and seat are padded with high quality microfiber infused with coffee grounds, produced through a patented technology, enabling the material to exhibit unique properties, including being odor control and quick drying for added hygiene and comfort.
• Silver lining
  The S5000's embroidery is made out of a silver thread. Silver is long hailed for its antibacterial properties. Silver interrupts bacteria's ability to form chemical bonds critical to its survival, so when bacteria meets silver, it falls apart.
• Penta RS1 65mm/2.5" caster
  Custom racing style caster coated with polyurethane (PU) for soft and smooth gliding on any surface.
• Soft-glide wheels / aluminum alloy foot
  The wheels are engineered for quieter operation and greater resistance to foreign objects and debris. The 5-star base (made from aluminum alloy) keeps the chair solid, stable, and lightweight.
• Gas lift
  Fitted with an industrial-quality Class-4 gas lift cylinders for extra durability and ease of use, while keeping your seat maintained at the proper height.
• Adjustable 4D armrests
  4D customizable armrests provide support for the arms with greater range of width and height adjustments. Benefits include better blood flow and help to eliminate pain and injury to the wrist and arms.

additional information here: https://www.dell.com/en-ca/shop/alienware-s5000-gaming-chair/apd/aa522881/gaming-gaming-accessories#tabs_section