The SIHOO M56C Ergonomic Office Chair is engineered to provide superior comfort and long-lasting durability for professionals and home users alike. Its innovative 3D adaptive lumbar pillow adjusts seamlessly with your posture, ensuring proper spine alignment whether you’re working upright or reclining to 125°. The oversized 2D adjustable headrest reduces neck and shoulder strain, while the memory foam W-shaped seat cushion distributes body weight evenly to ease hip and thigh pressure. Breathable mesh fabric enhances airflow, keeping you cool during extended work hours. The dual-tilt mechanism locks in your preferred angle for both productivity and relaxation. Reinforced with high-quality polypropylene and tested over 100,000 times, this chair combines strength with ergonomic precision, making it a reliable solution for everyday office use.

Key Features Product

• Dynamic Lumbar & Back Support: Equipped with a 3D adaptive lumbar pillow and widened split backrest, this chair supports the natural curve of your spine and relieves tension during extended sitting sessions.

• Ergonomic Headrest & Seat Cushion: The oversized 2D headrest adjusts for both height and tilt, while the W-shaped memory foam cushion distributes pressure evenly to reduce discomfort across the hips and thighs.

• Breathable Mesh Design: With a high-back breathable mesh frame, this chair promotes steady airflow, preventing heat buildup and allowing you to stay cool and focused throughout the workday.

• Durable Construction & Stability: Built with reinforced polypropylene and tested rigorously for quality, the M56C ensures long-term durability and steady support, holding up to daily use in home or office settings.

• Adjustable Tilt & Swivel Function: The dual-tilt locking mechanism lets you secure your preferred seating angle from upright focus to 125° recline, while the 360° swivel base provides easy movement and accessibility.

Easy Assembly: Designed for user convenience, the chair can be assembled quickly with minimal tools, making it simple to set up in any home office or professional workspace.

Versatile Use: Perfect for long hours of work, study, or gaming, this ergonomic chair adapts to multiple environments while maintaining professional style and superior comfort.

Specifications

• Brand: SIHOO
• Color: Black
• Product Dimensions: 17.1″D x 20″W x 40″H
• Size: Oversized
• Back Style: Split Back
• Material: Memory Foam
• Item Weight: 30 Pounds
• Frame Material: Polypropylene
• Seat Depth: 19.48 inches
• Style: Basic

Customer Reviews

• Adam: The chair is sturdy and stylish with great ventilation. It feels firm at first but becomes more comfortable over time, making it a strong long-term option.
• Tim Stairs: Provides excellent relief for back pain during 6–8 hour workdays. Easy to assemble, though the armrest slides slightly when not locked.
• Annie: Bought for her father who has back pain, and he found it very comfortable with great lumbar support. Assembly was simple and the seat cushion is firm but effective for long seating.
• Amazon Customer: Stylish, well-designed ergonomic chair with reliable comfort. It matches modern office furniture perfectly and assembles easily.
• J.J: Praises the breathable mesh, adjustable headrest, and supportive wide seat cushion. Comfortable for long hours with durable build quality.