For those with sedentary jobs, long hours of sitting often lead to lower back strain, neck pain and general fatigue. Traditional chairs are simply not designed for people who spend eight or more hours a day working, creating or playing, and many live with discomfort for years, believing that pain is an inevitable part of modern work life. The truth is that this shouldn't happen.
Sihoo, an award-winning leader in ergonomic furniture design, is committed to improving health, comfort and productivity through smart seating. Their philosophy is simple: “Sit well, think better.” And this Black Friday and Cyber Monday—November 1st to December 7th—Sihoo is offering its best deal of the year: the Sihoo Doro C300 Ergonomic Office Chair is 50% off, down from $559.99 to just $269.99.
Here's something special for you – use our exclusive discount code. SIHOOPWD to get an additional 6% discount. This means you can bring home the Sihoo Doro C300 for just $253.79. How many!
Xihu
Get the comfort you deserve
Everyone deserves a chair that supports their well-being as well as their work. Show Alcohol C300 designed for people who value health, productivity and self-esteem, especially professionals, students and creative people who sit for long periods of time and need increased lumbar and neck support.
With an advanced ergonomic design and adaptive support technology, Doro C300 helps users improve posture, stay comfortable longer, and enhance productivity and focus. Those who switch from traditional chairs consistently report less pain, less pressure on their hips, and significant improvements in daily comfort.
Advanced support that moves with you
The Doro C300 takes dynamic back support to the next level with BM (Body Movement) tracking, allowing lumbar support to automatically adjust to posture changes throughout the day – no manual adjustments required. The arched design of the lumbar spine naturally aligns the spine, protecting the lower back during intense work, school activities and late-night creative work. Sihoo calls this feature “self-adaptive lumbar support.”
The flexible backrest provides constant support as you move your upper body, and the waterfall-shaped seat cushion evenly distributes pressure to reduce hip discomfort. Combined with an intelligent weight-sensing tilt mechanism, Doro C300 provides effortless balance and movement for a healthier, more comfortable sitting experience.
Premium ergonomic adjustment
- Extra-wide 3D mechanical headrest. for personalized neck support
- 4D coordinated armrests which are adjustable in all directions and move with the seat back
- Tested up to 300 lbs.
- BIFMA and TUV certified. for safety and durability

Xihu
Improve your workspace – without the pain
Sihoo Doro C300 turns long hours of sitting into a rewarding, health-focused experience, helping you work smarter, think clearer and live better.
This Black Friday/Cyber Monday, improve your well-being for just $269.99. Use exclusive discount code SIHOOPWD To get an additional 6% discount – purchase the Sihoo Doro C300 now for $253.79!
Because you work hard – and you deserve the comfort of an ergonomic Sihoo chair.
Sit well, think better.
On sale until December 7th.






