Do you often sit before desk for hours and suffer from backache? You need our ergonomic office chair to relieve fatigue. Our executive chair features a S-shaped backrest and wide lumbar support to fit your body curve and support your lower back. Elastic and breathable mesh provides strong support and good air circulation. The thick cushion which is filled with high density sponge brings you a comfortable sitting experience. Besides, you can easily adjust the seat height to make the chair suitable for your stature. This 360°swivel chair with 90°-120°rocking backrest frees you from sedentary work. The robust 5-star base ensures great stability, and 5 smooth-rolling casters make flexible mobility in all directions. When not using the chair, you can flip up the armrests for space-saving storage. Furthermore, with a stylish appearance, this swivel task chair will fit in all occasions. Bullet Point: Ergonomic Chair with Lumbar Support: This home office chair is designed with human-oriented ergonomic backrest, which perfectly fits your back and waist while relieving fatigue in long-time sitting. Moreover, the wide lumbar support holds your low back to help reduce back pain effectively. Height Adjustment & Rocking Function: You can raise or lower the seat from 45cm to 55cm to match well with desks of different heights. What's more, the rocking back can be tilted from 90° to 120°, enabling you to rock back and forth for relaxation after tired sedentary work. Breathable Mesh & Comfortable Seat: The backrest is crafted from densely knitted mesh with good air permeability, high elasticity and abrasion-resistance, allowing you to sit without feeling hot or sweaty. The thick sponge padded seat cushion with high resilience offers you comfortable sitting experience. Flip-up Armrests for Space-saving Storage: This ergonomic office chair comes with 90°folding armrests which not only provide comfortable support for your arms, but also can be freely flipped up and down. At the end of the day, you can push the chair under your desk to save more space. Stable Structure & Flexible Movement: Supported by the heavy-duty 5-claw base, this swivel computer chair is stable and strong enough to hold up to 150kg. Meanwhile, 5 smooth rolling casters make this swivel computer chair easy to move around with low noise. Stylish & Versatile Design: With all-round personalized adjustment and comfort, this ergonomic swivel rocking chair is sure to be the perfect companion for your work, study and play time. Additionally, the simple and modern style makes the chair a good addition to your home and office. Features: Ergonomic backrest and lumbar support offer strong back and waist support Breathable and elastic mesh for optimal airflow and durable use Thick sponge padded provides great comfort 10cm adjustable seat height to meet your different needs 90° -120° rocking backrest allows to relax at any time Create more space in your office and home with the flip-up armrests 5-claw base and sturdy frame for reliable stability and weight capacity 5 mute universal caters with smooth mobility for multi-tasking convenience 360° rotation design adds much fun to complicated work Used as a computer chair, desk chair, office chair, gaming chair, etc Suitable for study room, office, meeting room and other places Detailed instruction and numbered parts for easy and quick assembly Specifications: Color: Black/White Material: Steel, PP, Mesh, Elastic Fabric, Plywood, Sponge Overall Dimension: 63 x 63 x 92.5 -102.5 cm Seat Width: 50 cm Seat Depth: 51 cm Seat Height from the Ground: 45 cm - 55 cm Net Weight: 9.5 kg Weight Capacity: 150 kg Package Includes: 1 x Home Office Chair 1 x Instruction