Sihoo C300-Pro-V2-M101 Ergonomic Office Chair with 8D Articulating Armrests

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The second-generation C300 Overseas Market Model is designed around the core mantra of "Active Spine Protection, Dynamic Adaptation" to actively resolve wellness deficits from prolonged sitting. The backrest is engineered to slide fluidly and organically, adapting to your individual body lines and spontaneous sitting positions to ensure customized support across all spinal quadrants. Upholstered entirely in a high-elastic, high-contour wave-pattern mesh, this chair delivers superior breathability along with certified resistance to grease, oil, and stains.

Product features

8D Articulating Armrests: State-of-the-art armrest assemblies that support height configuration, internal/external rotation, left/right lateral shifting, front/back sliding, up-tilt angle flip positioning, and synchronized recline linkage.

Dynamic Backrest Assembly: Features a 7-position vertical elevation matrix and an S-shaped contour that naturally matches spinal curves for comprehensive thoracic relief.

Adaptive Lumbar Core: Crafted from fiber-reinforced polyamide (PA+Fiber), the lumbar support offers an advanced self-adaptive spring cushioning response that articulates in perfect synchronization with the primary backrest.

Advanced Wire-Controlled Mechanism: Equipped with a 3-position self-weight-adjusting chassis that supports pneumatic vertical travel, micro-depth seat pan sliding, and recline locking at 113°, 123°, or a maximum of 135°.

Multi-Angle Headrest: Made from an ultra-durable fiberglass-reinforced polyamide composite, featuring a 1.8" (4.5 cm) height lifting stroke and multi-angle axial rotation to correctly align the cervical spine.

Commercial-Grade Foundation: Built on a heavy-duty 27.6" (70 cm) structural steel base with an SGS and ANSI/BIFMA certified Class 4 gas lift cylinder. Oversized 2.4" (6 cm) premium silent PU casters provide silent gliding and maximum floor protection.

Dimensions & Weight

Package Size: 30.7" × 22.4" × 20.5" (780 × 570 × 520 mm) | Weight: Net 55.4 lbs (25.15 kg) / Gross 72.1 lbs (32.72 kg)

Materials and care

Materials: Fiberglass-reinforced polyamide (PA+Fiber) composites, high-elastic wave-pattern mesh, structural steel base, and PU casters with electroplated hubcap housings.

Care Instructions: Rated strictly for single-occupant use with a maximum weight capacity of 264.6 lbs (120 kg). Do not sit or apply complete body weight directly to the armrests, and never stand upright on the seat pad surface. Keep the woven mesh completely separated from active heat sources, open flames, and sharp or jagged tools. Keep hands clear of the under-seat structural metal mechanism channels to avoid pinch injuries.

Merchandising tips

Retail & Wholesale Pitching: When pitching this second-generation overseas model to major retail buyers at Costco, heavily emphasize its flawless performance in the ANSI/BIFMA X5.1-2017 (R2022) testing. Specifically, highlight that it passed the severe rear stability test holding 286.6 lbs (130 kg) of counterweights, and a base static pressure test of 2504.4 lbs (1136 kg), proving extreme commercial reliability.

Target Audience Messaging: Market the state-of-the-art 8D articulating armrests specifically to users engaged in mobile gaming and handheld typing profiles. The up-tilt flip positioning and down-fold recline tracking are uniquely designed to support the arms during these modern usage habits.

Visual Focus for E-commerce: For your Shopify product page, ensure your imagery or video assets clearly demonstrate the advanced wire-controlled mechanism and the micro-depth seat pan slide adjustments. Showing how the backrest fluidly follows spontaneous posture shifts will help justify the premium positioning of this "Pro" model to your online customers.