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

SIHOO · Office Chairs

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

$359.99

4.8 · 241 reviews

Price comparison

Attributes

Lumbar support
Dynamic lumbar support for all-day back comfort Designed to fit users from 5' to 6
Adjustability
Seat Depth for Long Sitting; adjustable seat depth 6D adjustable armrests for versatile support Easy adj
Weight capacity
Supports up to 330 lbs

Features / Highlights

  • Dynamic lumbar support for all-day back comfort
  • Designed to fit users from 5' to 6'3"
  • Spacious cushion with adjustable seat depth
  • 6D adjustable armrests for versatile support
  • Easy adjustments with a single handle
  • Certified by BIFMA and SGS for quality and durability
  • Endorsed by The Gadgeteer, MMORPG, and loved by thousands of workers for ergonomic excellence
  • SIHOO C300 Pro is built for people who spend long hours at their desk and want to stay comfortable without constantly thinking about their chair.
  • It moves naturally with your body, supports you through focused work, and lets you relax the moment you lean back.
  • From intense work sessions to quiet breaks, the C300 Pro helps you stay supported, comfortable, and productive—day after day.
  • Key Features: Supports up to 330 lbs Dynamic lumbar support for all-day back comfort Designed to fit users from 5' to 6'3" Spacious cushion with adjustable seat depth 6D adjustable armrests for versatile support Easy adjustments with a single handle Certified by BIFMA and SGS for quality and durability Endorsed by The Gadgeteer, MMORPG, and loved by thousands of workers for ergonomic excellence

Product description

SIHOO C300 Pro is built for people who spend long hours at their desk and want to stay comfortable without constantly thinking about their chair. It moves naturally with your body, supports you through focused work, and lets you relax the moment you lean back. From intense work sessions to quiet breaks, the C300 Pro helps you stay supported, comfortable, and productive—day after day.

Key Features: Supports up to 330 lbs Dynamic lumbar support for all-day back comfort Designed to fit users from 5' to 6'3" Spacious cushion with adjustable seat depth 6D adjustable armrests for versatile support Easy adjustments with a single handle Certified by BIFMA and SGS for quality and durability Endorsed by The Gadgeteer, MMORPG, and loved by thousands of workers for ergonomic excellence

Shipping & delivery

  • Typically, it takes 3–5 business days to receive the shipment in the US and 5–7 business days in Canada.
  • free shipping in these regions.
Full captured policy

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

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Returns & refunds

  • 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.
Full captured policy

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

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From customer reviews

as I don't feel supported without it
This one is the most affordable and provided great support for long working hours
Easy to build
Read full reviews at the retailer ↗

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