Sihoo, the Shenzhen-based ergonomic furniture brand, is rolling out its latest chair this April: the Doro C300 Pro V2. Priced at $499.99 and available in black or white, it goes on sale through the official Sihoo website and Amazon US.
The pitch is straightforward. Most ergonomic chairs are built around fixed support points. They work reasonably well when you sit still, but the moment you shift, lean, or slouch, you’re largely on your own. The Doro C300 Pro V2 is designed around the opposite idea.
A Chair That Doesn’t Need You to Sit Like a Statue
Sihoo calls the underlying architecture the DynaCore System, which links support across four zones: head, back, lumbar, and arms. The goal is continuous contact regardless of position, whether you’re locked in on a deadline, reclining for a video call, or somewhere in between. Working alongside it is the SyncroFlex System, a dual-spring, dual-track backrest structure that adjusts automatically when someone sits down and tracks spinal movement as posture shifts throughout the day.
The lumbar component has also been reworked. The Self-Adaptive Dynamic Lumbar Support 2.0 offers three modes: firm, gentle, and sacrum support. It also slides with the user’s center of gravity during recline, which eliminates the gap that tends to open up at the lower back when you lean back in most chairs. Sihoo says the wider support area handles larger body types better than the previous version.
Armrests That Actually Follow You
The 8D Bionic Armrests are one of the more notable upgrades. Height, depth, tilt, lateral position, and rotation are all adjustable, and crucially, the armrests move in sync when the backrest reclines. That last part matters more than it sounds. On most chairs, reclining means your arms either get pushed up awkwardly or drop away from the armrests entirely. Here, the linkage keeps shoulders and arms in a supported, relaxed position across different recline angles.
The Ultra-Wide 3D Headrest follows a similar logic: wider contact area, multi-directional flexibility, meant to reduce neck strain during long sessions rather than just giving the head somewhere to rest.
The Rest of the Package
The seat cushion uses depth adjustment to accommodate different leg lengths, which is genuinely useful and often overlooked in this category. The mesh throughout is Sihoo’s Cloud Mesh 2.0, which runs softer and more breathable than standard mesh. Recline goes up to 135 degrees with an integrated footrest, and the Smart Weight-Responsive Mechanism 2.0 automatically calibrates recline resistance based on the user’s weight so it doesn’t feel stiff for lighter users or springy for heavier ones. Max supported weight is 180 kg. The chair carries whole-chair BIFMA certification and uses an SGS Class-4 gas lift.
Availability and Pricing
The Sihoo Doro C300 Pro V2 is available now for $499.99 in black or white. It can be ordered directly from Sihoo’s official website or through Amazon US.
