Sihoo DORO-C300-PRO Ergonomic Office Chair with 6D Armrests

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Elevate your workspace with the Sihoo DORO-C300-PRO, engineered with an innovative flexible-glue support technology that provides a triangular flexible elastic support. This system allows the backrest to move naturally with your body shape and sitting posture, offering optimal support for every region of the back. Fully upholstered in a high-elasticity, high-wrap wave mesh, this chair delivers superior comfort while remaining highly breathable and resistant to stains, oil, and tearing.

Product features

Advanced 6D Armrests: Equipped with ultra-soft, thickened pads, the armrests adjust vertically by 2.6 inches, rotate horizontally (inward 60° / outward 15°), move forward/backward by 2.0 inches, and tilt 35° upward to deliver an exceptional typing and gaming experience.

Adaptive Backrest & Lumbar: The S-shaped back frame offers 4 levels of height adjustment and contours to the spine, while the fiber-reinforced PA lumbar support self-adjusts to keep your posture upright.

Wire-Controlled Mechanism: A weight-activated self-loading chassis allows you to adjust height, slide the seat depth (1.2-inch stroke), and lock the recline at 110°, 120°, or 133°.

Waterfall Contoured Seat: The pressure-relieving seat surface effectively reduces under-thigh pressure and maintains smooth blood circulation whether leaning backward or forward.

Dynamic Headrest: Features 1.8 inches of height adjustment across 6 levels, a 45° headrest rotation, and a 25° bracket rotation to support a healthy cervical spine.

Commercial-Grade Base: Built on an SGS- and BIFMA-tested Class 4 electroplated gas lift and a 27.6-inch detachable base, rolling on large-edge quiet PU casters that protect floors from scratches.

Dimensions & Weight

Package Size No Footrest: 30.7 × 22.4 × 20.5 inches | Weight: Net 55.3 lbs / Gross 75.2 lbs

Package Size with Footrest: 30.7 × 22.4 × 20.5 inches | Weight: Net 59.5 lbs / Gross 80.7 lbs

Materials and care

Materials: High-elasticity wave mesh, fiber-reinforced PA frames, a 350 detachable base, and PU casters with electroplated center caps.

Care Instructions: Designed and rated for single-person occupancy only. Keep hands completely clear of the under-seat base mechanism during adjustment to avoid pinching. Do not sit on the armrests, stand on the chair, or use sharp items near the mesh.

Merchandising tips

B2B Focus: Highlight the rigorous 2504.4 lbs base static load test and 120,000-cycle gas lift safety test to validate its commercial endurance for wholesale buyers.

Visual Focus: Prominently feature the 35° upward tilt of the 6D armrests in your Shopify gallery, as this is a high-value feature for the mobile gaming and professional tech market.