The SIHOO M90C-401 features separate upper and lower double seat backs designed in a golden ratio to provide adaptive, spring-loaded support exactly where you need it—dynamically cradling your lumbar spine as you move. Its breathable high-density mesh backrest, shock-absorbing seat cushion, adjustable headrest, and 6D multi-directional armrests combine with a synchro-tilt mechanism to promote healthy posture and long-term comfort. :contentReference[oaicite:0]{index=0}
Brand | SIHOO |
Model Number | M90C-401 |
Backrest | Dual-flex mesh with dynamic lumbar support |
Seat Cushion | Shock-absorbing foam with waterfall edge |
Headrest | Height & tilt adjustable |
Armrests | 6D adjustable (height, width, depth, angle, pivot, slide) |
Mechanism | Synchro-tilt (90–125°) with tension control |
Base & Casters | 5-star nylon base with smooth-rolling PU casters |
Specs cited from SIHOO official and biomechanics research. :contentReference[oaicite:1]{index=1}
Warranty Terms: | 5-year warranty on frame & mechanism, 1-year parts warranty |
Brand | |
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Product Categories | Office Chair |
Accessories | Arm Rests |