Breathable mesh fabric+PU leather splicing: The back mesh area is breathable and moisture wicking, making it comfortable to sit for long periods of time without sweating; The PU leather part is wear-resistant and scratch resistant, with a premium texture and easy to clean and maintain. Ergonomic spine protection system: The detachable lumbar pillow accurately supports the lumbar spine, combined with a wrapped backrest shape, conforms to the curve of the lumbar spine, and effectively disperses the pressure of prolonged sitting; The headrest area supports the cervical spine and relieves neck fatigue. Multi functional adjustment configuration: 2D adjustable armrest, backrest angle locking, lifting and rotating function, can freely switch sitting posture, suitable for gaming battles, office focus, and nap time; Some styles come with extendable foot pedals, making it more comfortable to lie flat. Stable and durable structure: Bold five claw base+silent roller, stable load-bearing, smooth movement without disturbing people; The frame is sturdy and not easily deformed after long-term use.