Sihoo B100 Ergonomic Office Chair with 2D Flip-Up Armrests & Premium Wave Mesh

Premium Wave-Pattern Mesh: Highly breathable, non-toxic, and resistant to high temperatures and rot, ensuring long-lasting comfort and structural integrity.

Adaptive Lumbar Support: Built with a PP and fiber frame, the lumbar pillow features an intelligent front and rear tension adjustment system that responds to your body to provide dynamic lower back support.

2D Flip-Up Armrests: The armrests can rotate vertically up to 75°, allowing you to comfortably support your arms while working or easily flip them entirely out of the way.

Articulating Headrest: Adjusts across 11 distinct height positions with a 3.9" (10 cm) travel range and rotates 45° to perfectly cradle your neck.

Heavy-Duty Recline Mechanism: A thickened steel explosion-proof mechanism offers adjustable recline tension and a 3-gear lock, allowing you to secure the backrest at 113°, 123°, or a maximum 133° angle.

Commercial-Grade Base & Lift: Equipped with a premium Class 4 steel gas lift and a 27.6" (70 cm) knockdown steel base that has passed a rigorous 2,504.4 lbs (1136 kg) static pressure test.

Floor-Safe PU Casters: Large 2.36" (6 cm) PU casters with smooth passivated edges ensure agile and quiet movement without scratching your floors.

Package Size: 20.5" × 13.2" × 21.3" (52 × 33.5 × 54 cm) | Weight: Net 38.0 lbs (17.25 kg) / Gross 39.9 lbs (18.1 kg)

Materials: Wave-pattern premium mesh, PP and fiber (utilized in the headrest, back frame, seat shell, and lumbar pillow), heavy-duty steel mechanism, steel base, and PU casters.

Care Instructions: Designed for a maximum weight capacity of 265 lbs (120 kg). Always place the chair on a flat, level surface and keep it away from open flames and sharp or hooked objects. Do not sit on the armrests, stand on the chair, or use it as a step stool or handcart. To prevent pinching, keep hands clear of the base mechanism during adjustment.

Retail & B2B Pitching: When pitching this model to commercial buyers, strongly emphasize the chair's ANSI/BIFMA X5.1-2017 (R2022) compliance and the Class 4 gas lift, as these are premium safety and durability markers for corporate procurement. The 120,000-cycle lumbar durability test is also a key selling point for heavy-use work environments.

Visual Focus for E-commerce: For your Shopify product page, ensure the image gallery highlights the unique texture of the wave-pattern mesh. Include a GIF or lifestyle image showing the 75° vertical rotation of the flip-up armrests.

Target Audience Messaging: Market the flip-up armrests specifically to users with compact home offices or dual-purpose spaces, as this feature allows the chair to be pushed entirely under a desk to save valuable room.