Sihoo B300 Pro Ergonomic Office Chair

Highlights at a Glance

4D MicroFit Lumbar

Lumbar Support. Down to the Millimeter.

Experience precision comfort with the 4D MicroFit Lumbar system. It dynamically adapts to your movements—shifting up to 10mm or twisting 3° seamlessly—while offering 20mm of depth and 50mm of height tuning. Whether you're leaning in, sitting tall, or kicking back, it contours perfectly to your lower back.

Adjustable Contour-Aligned Backrest

Your Spine. Perfectly Aligned.

Designed to follow the natural curve of your spine from top to bottom, the backrest helps reduce strain on your lumbar region, upper back, and shoulders. With 55 mm of height adjustment, it comfortably fits users ranging from 155 cm to 185 cm.

6D All-Around Armrests

Arm Support That Follows Your Lead.

Whether you’re diving deep into a study session, gaming, or simply kicking back, the 6D Armrests move exactly how you need them to. With six distinct dimensions of adjustment—including 360° rotation, flip-up capability, and seamless recline synchronization—they adapt instantly to your posture. Total freedom, uncompromising comfort.

3D Ultra-Wide Headrest

Your Neck's New Favorite Place.

An extra-spacious design paired with 3D adjustability ensures targeted neck support while allowing you to comfortably rest your head to the side. Experience zero neck soreness, even through the longest conferences.

Weight-Adaptive Recline

Effortless Recline. No Knobs Required.

Move seamlessly from upright to reclined. B300 Pro’s Smart Weight-Adaptive Mechanism instantly responds to your body weight, delivering the perfect amount of recline resistance automatically. Sit back, relax, and let the chair do the work.

105°, 120°, 135° Recline

Work, Create, Unwind

Effortlessly transition through your day with customizable recline angles. Lock in at 105° to tackle your inbox with deep focus, shift to 120° when you need space for inspired creation, and kick back at 135° for well-deserved relaxation.

Complete Control Within Reach.

Adjust your chair effortlessly without leaving your seat. Intuitive, right-sided controls let you instantly fine-tune your seat height, depth, and recline angle—no bending or fumbling required.

Breathe Easy. Work Beautifully.

Engineered with an advanced weave, this isn't just mesh—it's a highly responsive support system. It instantly adapts to your posture while maintaining its perfect elasticity year after year. With maximum airflow, you stay cool, dry, and entirely comfortable. Soft to the touch. Tough on fatigue.

Built to Last. Certified to Perform.

Crafted from premium materials, Sihoo B300 Pro is rigorously tested and certified by BIFMA, SGS, and TÜV Rheinland. Built for the long haul, it’s designed to support your professional journey—evolving with you from fresh graduate to corporate leader.