Sihoo M57 Full-Mesh Ergonomic Office Chair with 3D Adjustable Armrests

Full-Mesh Breathability: The entire chair is upholstered in a highly durable PE and polyester mesh that is non-toxic, wear-resistant, and provides excellent airflow to keep you cool throughout the workday.

Adaptive Lumbar Support: Features a built-in PP and fiber lumbar pillow wrapped in thick sponge, adjustable 5cm vertically and 4cm front-to-back for targeted, powerful lower back support.

3D Adjustable Armrests: Built with an electroplated Q235 steel and PA material frame, the soft PU-padded armrests adjust in 5 height gears (7cm travel), slide forward and backward by 6cm, and rotate horizontally to adapt to any typing posture.

Dynamic Headrest: The PP and fiber headrest adjusts 8cm in height and rotates up to 45 degrees for optimal neck relief.

Advanced Tilt & Recline: Equipped with a thickened explosion-proof mechanism and cold-rolled spring, allowing for smooth height adjustments, tilt tension control, and a 3-gear recline lock at 110°, 116°, or 126°.

Premium Seat Construction: The front edge of the seat features high-elasticity styling cotton (density 60, hardness 50) to relieve thigh pressure, supported by a sturdy PP and fiber seat base.

Certified Durability: Built with an SGS- and BIFMA-tested Class 3 electroplated gas lift and a 350mm electroplated iron base that passed a 1136kg static pressure test. Smooth, silent large-edge PU casters flexibly glide while protecting your floors from scratches.

Package Size: 70 × 27.5 × 53.5 cm | Weight: Net 17.65 kg / Gross 20.0 kg

Materials: PE and polyester special mesh, PP + fiber frames (headrest, backrest, and seat), electroplated Q235 steel and PA armrest structure, 3D PU armrest surfaces, and a 350mm electroplated iron base.

Care Instructions: Always place the chair on flat, even ground. Do not stand on the chair, use it as a step ladder, or use it as a pushcart. Do not place heavy objects on the seat. Keep away from open flames and avoid scratching the chair's surface with sharp or hooked objects.

Retail Buyer Pitches: When presenting this model in comparison pitch decks for large retail buyers at Costco or CMI, heavily highlight the commercial-grade durability testing. Specifically, point out the SGS and BIFMA certifications, the 136kg backrest pull test, and the 115kg vertical armrest pressure test to demonstrate superior structural integrity.

Visual Focus for E-commerce: On the Treasure Creek USA Shopify storefront, prioritize high-quality images or GIFs demonstrating the 3D armrest adjustability and the breathable full-mesh design. Visualizing the 4cm lumbar depth adjustment and the 45° headrest rotation will help justify the premium feature set to online shoppers.

Target Audience Messaging: Position the M57 as the ultimate solution for professionals seeking maximum temperature control and ergonomic flexibility. Emphasize that the PE and polyester mesh resists high temperatures, oil, and UV rays, making it an incredibly resilient option for sunlit offices or demanding work environments.