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M18, SIHOO's high back ergonomic office chair, can more effectively support the back and head compared with low back office chairs and leather office chairs, while providing larger sitting area. The seat cushion is made of soft sponge to keep your hips comfortable. The backrest is made of high-stretch breathable mesh to avoid stuffiness. High quality is gauranteed with numerous tests. Furthermore, we promise 24-hour online service, 30-day free returns, 60-day free exchanges, and 1095-day warranty. SIHOO M18 Ergonomic office chairs can give you a unique sitting experience!

M18, SIHOO's high back ergonomic office chair, can more effectively support the back and head compared with low back office chairs and leather office chairs, while providing larger sitting area. The seat cushion is made of soft sponge to keep your hips comfortable. The backrest is made of high-stretch breathable mesh to avoid stuffiness. High quality is gauranteed with numerous tests. Furthermore, we promise 24-hour online service, 30-day free returns, 60-day free exchanges, and 1095-day warranty. SIHOO M18 Ergonomic office chairs can give you a unique sitting experience!

The executive chair features a pocket spring lumbar support for elasticity and heat dissipation during prolonged sitting. The widened seat, free of restricting side wings, along with an adjustable footrest, allows comfortable seating in any position.With dual-layered construction, featuring elastic high-density foam and high-loft fiber, it offers support and a 3D enveloping sensation.The BIFMA-tested five-star base withstands static pressure with a load capacity of 300lbs, and the SGS-3 gas lift passes 120,000+ lift tests.

The SIHOO A3 office chair, an innovative ergonomic model, uses advanced technology to ensure comfortable sitting and proper posture. It features automatically adjustable 4D headrest, lumbar support, linked 3D armrests, an intelligent gravity mechanism, and automatic adjustment, along with a soft backrest and breathable mesh seat for all-day comfort. Its 3D headrest offers wide-angle adjustment (4.5cm up/down, 6.5cm forward/backward, 20° angle) and is made of soft mesh with a triangular soft elastic frame and support straps for back support; the 4-position adjustable 6cm liftable backrest suits all heights and auto-reverts to level 1 when at maximum height. It also comes with domino auto-adaptive lumbar support. The intelligent gravity mechanism with weight-adjustable resilience enables 2-step auto-adjustment and tilting from 92° to 100° to 112° (max), allowing comfortable rocking or short breaks. Certified by American BIFMA and German TUV, it has passed tests like backrest strength and seat impact tests, and is equipped with SGS Class 4 cylinders for durability and safety. It comes with a 3-year warranty, with support available for any product issues.

The SIHOO Ergonomic Office Chair delivers superior comfort with its fully adjustable design, featuring a multi-directional headrest, customizable lumbar support, 3D armrests, and a 90°-126° reclining backrest for versatile working positions, along with 3.15-inch height adjustment and 360° smooth rotation. Endorsed by the Ergonomics Application Association, its scientifically designed ridge backrest mirrors the human spine to relieve pressure, while the waterfall-edge seat cushion provides optimal thigh support. Built with premium materials, including a sturdy aluminum base, noise-free casters, and a dual-frame backrest for enhanced durability, this chair undergoes rigorous testing (including seat impact, armrest fatigue, and leg static pressure tests) to meet strict safety standards. Backed by a 3-year warranty, we offer free replacement parts for any quality issues—contact us for prompt assistance.
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