This black office chair redefines comfort for extended work sessions, featuring height adjustment (48-51.2 inches) to accommodate various desk heights or body types. The reclining backrest supports 90° to 120° angle adjustment, catering to personalized seating postures during meetings, reading, or relaxation. 3D adjustable lumbar support dynamically conforms to spinal curves, effectively alleviating lower back fatigue. Mesh fabric paired with foam padding balances breathability and support, while the height-adjustable headrest provides neck support. 3D adjustable armrests (side-button controlled) enable personalized positioning for typing or resting. The 360° swivel base features five durable casters for smooth mobility, while a 500-pound weight capacity ensures stability for heavier users. This height-adjustable chair is designed for home offices or corporate workspaces, delivering personalized support tailored to individual needs. Our office desk and chair set helps alleviate muscle fatigue in the neck, shoulders, and lower back. Features： Height-adjustable with ergonomic design: A height adjustment range of 48-51.2 inches (122-130 cm) ensures this adjustable chair adapts to your desk or body type, promoting proper posture. With a weight capacity of 500 lbs (227 kg), it's an ideal choice for heavier users or those working long hours. 90°-120° adjustable backrest with 3D lumbar support: The backrest offers an adjustable angle range from 90° to 120°, while the 3D adjustable lumbar support dynamically conforms to the spine's natural curve. This provides all-day comfort and effectively relieves pressure on the lower back. Ergonomic Design: The ergonomically designed office chair with lumbar pillow provides solid support. The curved lumbar support of this comfortable office chair ensures a snug fit without suspending the spine, stay energized with our ergonomic mesh office chair. Adjustable headrest and 3D armrests: The height-adjustable headrest relieves neck strain, while the 3D armrests (operated via side buttons) allow personalized positioning for typing or resting. As for Assembly: Our comfort executive office chair are integrally molded, simplifying assembly for a secure fit just in minutes.