Premium Pick → Doro C500-FT

Built to Last: Our Warranty

At Sihoo, we are committed to delivering ergonomic solutions built to last. That’s why every chair carries a warranty set for its model—so you can sit and work with confidence for years to come.

Warranty Regulations

  • Warranty by model: covers manufacturing defects, structural failures under normal use, and mechanical issues not caused by misuse or modifications. Each model’s term is in the table below.
  • Who Is Covered: products bought from SIHOO Thailand — in our showrooms, on this website and in our official Shopee, Lazada and TikTok Shop stores.
  • Automatic Warranty Activation: bought in a showroom or on this website, your warranty starts at purchase with no extra steps. Bought on Shopee, Lazada or TikTok Shop? Register below for 1 extra year of warranty.

Warranty by model

Each model's standard warranty, counted from the purchase date.

ModelWarrantyNote
SIHOO M59AS Ergonomic Chair5 years—
SIHOO Model M18 Ergonomic Chair5–7 years—
SIHOO Model M57 Ergonomic Chair5–7 years—

Model not listed? Ask our team.

For Shopee, Lazada and TikTok Shop customers

Register for 1 extra year of warranty

Have your order number ready, then enter the buyer details, model and purchase date. Our team checks the order and lets you know by email. The extended warranty is subject to SIHOO Thailand’s conditions.

Buyer details

We will send the registration confirmation and the result of our check to this email.

Order details
Where did you buy it? *

Choose where you bought it first to see where to find the order number.

Usually found on the label under the seat or on the product box.

How We Make Our Warranty Sustainable

  • Fix it before we replace it

    Fix it before we replace it

    Our warranty emphasizes repairing minor issues whenever possible instead of replacing the entire product. By providing replacement parts for smaller problems, we reduce waste and the environmental impact associated with manufacturing and shipping new items—helping your Sihoo chair last even longer.

  • Eco-Friendly Parts and Packaging

    Eco-Friendly Parts and Packaging

    All replacement parts are shipped using sustainable materials, and packaging is kept minimal to reduce waste. This reflects our commitment to lowering our environmental footprint by producing only what is necessary.

  • Recycling and Responsible Disposal

    Recycling and Responsible Disposal

    We ensure that returned parts and products are processed responsibly. When returns do occur, we recycle or repurpose materials in ways that minimize environmental harm, supporting a circular economy.

  • Maximizing Product Lifespan

    Maximizing Product Lifespan

    By encouraging repairs over replacements, our warranty helps extend the life of every chair. This reduces the demand for new products and conserves valuable natural resources, aligning with our mission to build durable, sustainable ergonomic solutions.

How to adjust your chair

Watch how to assemble your chair and adjust it to fit your body. Tap to play.

Videos by model

SIHOO M59AS Ergonomic Chair
SIHOO Model M18 Ergonomic Chair
SIHOO Model M57 Ergonomic Chair
SIHOO Doro C300-FT Premium Ergonomic Chair
SIHOO Doro S100 Premium Ergonomic Chair
SIHOO Doro S100 Premium Ergonomic Chair

@sihoothailand

Sit Well, Think Better