Product Description

Experience all-day comfort and support with the SIHOO DORO C300, designed for executives, managers, and professionals.

Key Features

• High-Back Ergonomic Design – Premium mesh upholstery with flexible backrest, dynamic lumbar support, and 4-level height adjustment.
• Adjustable Comfort – 6D armrests, multi-adjustable headrest, and waterfall-shaped seat with adjustable depth for personalized support.
• Smart Recline Mechanism – Weight-sensing recline with 4-position lock, up to 138°, for effortless and balanced leaning.
• Durable Build – PA + fiber mesh frame, polished aluminum base (tested to 1136 kg static pressure), PU nylon casters.
• Certified & Trusted – Class 4 gas lift (SGS & BIFMA certified); environmentally certified by BIFMA and TUV; endorsed by Tom's Guide, CNET, CNN, TechRadar, Forbes, with over 1,000 reviews.
• Maximum Load Capacity – 150 kg

9 Breakthrough Functions

Domino Dynamic Lumbar Support

This is Sihoo's invention, and it is also a genius idea.

The three variables that affect comfort and health, horizontal, vertical, and vertical, are designed into three modules and integrated into a lumbar pillow.

The lumbar support, seat cushion, chair back, and body form a chain-type lumbar support system.

Whether the user is sitting upright or lying back, the lumbar support can make corresponding changes in strength and position, truly protecting the waist like a shadow.

Bionic 6D Armrest - A World's First

Adjust it up, in, out, back,forth, and rotate in every conceivaible direction, even tilting upward by 35°

3D Mechanical Headrest

Ensure optimal support for your head and neck for your personal needs

Wide-Angle Flex Headrest

Seamlessly adjust the headrest up and down, back and forth, or rotate

Smart Weight-Sensing Mechanism

Harnessing gravity and mechanical technology, this feature ensures everyone experiences tailored comfort and ease when reclining

Seat-Back

Synchronized Recline

As you lean, the seal coordinates with the chair back

One-Touch

Control System

Conveniently located on the right side

Waterfall-Inspired

Seat Cushion

Efficiently distributes weight, reducing pressure on thighs and hips

Cloud-Like Full Mesh Upholstery

Waterfall-shaped cushion & pressure-relieving seating

4 Class Safety Gas Lift

120,000 safety tests, simulated 10 years of normal use lifting application scenarios

Customer Reviews on Sihoo Doro C300 Ergonomic Executive Office Chair with Advanced Back Support (No footrest)

Q&A on Sihoo Doro C300 Ergonomic Executive Office Chair with Advanced Back Support (No footrest)

Customer questions & answers