The SIHOO M90B-401 is an advanced dual-back ergonomic chair engineered for adaptive spine support. Its PE + dragon-pattern polyester mesh offers durability and airflow, while the split-type lumbar system automatically adjusts to lower-back movement. The height- and angle-adjustable headrest, 3D PU armrests, and multi-functional recline mechanism allow precise posture customization. Equipped with a steel base, SGS/BIFMA-certified Class-3 gas lift, PU castors, and a retractable footrest, the M90B-401 is built for premium comfort and long-hour performance.
| Brand | SIHOO |
| Model Number | M90B-401 |
| Color | Black |
| Mesh Material | PE + dragon-pattern polyester mesh |
| Headrest | Height & angle adjustable |
| Backrest | Dual-back design |
| Lumbar Support | Split adaptive lumbar system |
| Armrests | 3D PU armrests |
| Mechanism | Height & recline adjustable |
| Gas Lift | Class-3 (SGS & BIFMA certified) |
| Base | Steel |
| Casters | Smooth PU castors |
| Footrest | Included |
| Warranty Terms: | 1-Year Warranty Provided by 101 Multimedia |
The M90B-401 is highly praised for its dual-back system and adaptive lumbar support, making it ideal for users with lower-back fatigue. The mesh quality is durable and breathable, and the footrest adds comfort during extended reclines. It’s a strong choice for professionals seeking upgraded ergonomic capability.
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| Product Categories | Office Chair |
| Accessories | Arm Rests, Footrest |