
Sihoo C300 Pro Ergonomic Office Chair with Seat Depth for Long Sitting
$359.99SIHOO

SIHOO · Office Chairs
Sihoo Doro S300 is crafted for professionals who spend long hours at their desk and demand consistent comfort and support. Its design adapts seamlessly to your posture throughout the day, helping you stay focused during intensive work sessions, maintain proper alignment, and transition effortlessly between tasks. Combining award-winning ergonomics with premium materials, the S300 elevates your workspace experience, allowing you to work smarter, longer, and with confidence.
Key Features: Supports up to 330 lbs Anti-Gravity Mechanism for a weightless recline experience Dual dynamic lumbar support for personalized lower back care 6D adjustable armrests for ultimate versatility and comfort Cloud-like mesh with Italian velvet for a soft, breathable seating experience Independent backrest adjusts in five levels to fit all body types Spacious headrest for full neck and shoulder support Certified by BIFMA and SGS for trusted quality and durability Endorsed by Forbes, TomsGuide, TechRadar, CreativeBloq and more as a top choice for ergonomic excellence in both work and gaming
Trusted Shipping Solution Sihoo has warehouses worldwide for fast delivery. In the US, we use a network of 6 warehouses, with Los Angeles as the main hub. In Canada, warehouses in Vancouver and Toronto ensure quicker shipping.
Typically, it takes 3-5 business days to receive the shipment in the US and 5-7 business days in Canada. And we provide free shipping in these regions. Buying Guide More Shipping Policy Global Fulfillment Center & Office How We Make Our Delivery Sustainable Sihoo is taking steps to minimize our environmental impact by streamlining shipping routes and utilizing greener transportation methods.
Partnering with Green Carriers: We've teamed up with logistics providers like FedEx and UPS that are committed to reducing their carbon footprint through the use of low-emission and electric vehicles. Consolidating Shipments: We're reducing our carbon emissions by consolidating multiple orders into a single shipment, minimizing empty miles and unnecessary trips. Eco-Friendly Packaging: We use recycled paper and eco-friendly adhesives.
Our packaging is perfectly sized to minimize waste and protect your order. Regional Warehousing: To minimize our carbon footprint, we've established regional warehouses in key markets like the US and Europe, reducing the need for long-haul transportation. Next Previous What Our Customers Really Think... @sihoo_studio Sit Well, Think Better
Worry Free Return Solution At Sihoo, your health and comfort come first — and that means no pressure when it comes to choosing the right chair. That’s why we offer a full 30-Day worry-free return and exchange policy, so you can try your Sihoo chair at home with confidence. We believe in responsible shopping, not just convenient shopping.
While we make returns easy, we also aim to reduce waste and protect the environment. Here’s how our return process works: Buying Guide More Return Policy Return Regulations Free returns If your chair arrives damaged, defective, or incorrect, we’ll take care of everything — including return shipping — within the 30-Day worry-free period. Just send us a photo or video to help us understand the issue and speed up your return.
Replacement parts first For small issues like a cracked part or a missing bolt, we’ll send free replacement parts instead of requiring a full return. It’s faster, reduces waste, and helps keep more chairs in use — which supports our sustainability goals. Changed your mind?
We still care If the return is due to reasons like buyer’s remorse, ordering the wrong model, or inputting an incorrect address, we still accept returns within 30 days. How We Make Our Return Sustainable Fair and Free Returns — Because You Deserve It: We know things don’t always go perfectly. If we send the wrong item or it arrives damaged, return it on us — within 30 days.
It’s our way of making things right without adding waste. Fix What’s Broken, Don’t Toss It: When small parts give you trouble, we send replacements instead of whole chairs. It saves shipping emissions, cuts waste, and helps your chair live longer.
Returns That Care for the Planet: We keep returns simple and gentle on the environment. By using local recycling centers and minimizing shipping, we do our part to reduce carbon footprints — because a healthy planet matters. Kindly From Your Home to Theirs: Chairs with minor damage—unsellable but still usable—are donated to local communities.
Responsible returns help us reduce waste and support those in need. Next Previous What Our Customers Really Think... @sihoo_studio Sit Well, Think Better
the mesh is tight and supportive
The recline experience alone makes it worth it
Feels sturdy and quiet while moving