Expert Features

• 90°–155° Mechanical Recline : Switch from upright focus mode to a deep 155° recline through a dedicated mechanical backrest system built for smooth, stable positioning.
• 2D Adjustable Armrests : Adjust the armrests up/down and front/back to better match your body position, desk height, keyboard placement, and gaming posture.
• Class 4 Gas Lift : A Class 4 gas lift powers reliable seat-height adjustment, giving SONIC an approximate 46–55 cm seat-height range.
• 360° Swivel : Full 360° seat rotation lets you move naturally around a gaming or workstation setup without constantly dragging the chair.
• Headrest Cushion Included : The supplied headrest cushion adds dedicated support around the head and neck during extended gaming, work, and reclined sessions.
• Lumbar Support Cushion Included : The supplied lumbar cushion supports the lower-back area and helps maintain a more supported seated position during long sessions.
• 50kg/m³ High-Density Foam : Thick, resilient shaped cushioning uses 50kg/m³ high-density sponge designed to retain support and resist premature cushion collapse.
• PVC Leather + Velvet Upholstery : SONIC uses a mixed white PVC leather and velvet finish, replacing the earlier generic “fabric upholstery” description with the manufacturer-confirmed material specification.
• High-Strength Metal Structure : The chair is built around a high-strength metal frame and dedicated mechanical support structure for stable reclining and height adjustment.
• Metal Base : A manufacturer-confirmed metal base provides the structural foundation for the gas lift, swivel system, and five-wheel layout.
• Silent PU Castors : Previously confirmed PU castors are paired with the latest manufacturer confirmation of a mute / low-noise wheel design for smoother, quieter movement.
• 150kg Maximum Supported Weight : The chair is specified for a maximum supported user weight of 150 kg.
• Ergonomic High-Back Design : The tall backrest, shaped seat, adjustable armrests, headrest cushion, and lumbar cushion work together to support gaming, computer work, and relaxed sitting.
• Wide Adjustment Range : With approximately 128–137 cm overall height, 46–55 cm seat height, adjustable armrests, and a 90°–155° backrest, SONIC offers meaningful mechanical customization rather than fixed-position ergonomics.
• Mechanical Setup Compatibility : No USB, Bluetooth, power, software, or app connection is required; SONIC operates entirely through its mechanical adjustment hardware and fits standard gaming and workstation environments.
• 1-Year Hardware Warranty : Hardware components are covered by the supplied 1-year hardware warranty.

Expert Specs