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Sidiz · Office Chairs

Sidiz T80

Full-time desk workers.

₩689,000 – ₩859,000

≈ $510 – $630

  • Up to Maximum load 125 kg
  • 15-year warranty
Check price on Amazon

Summary

A SIDIZ task chair designed with ITO Design, with a headrest and a 15-year registered warranty in Korea.

Best for

  • People who want a headrest and lumbar support on the same chair.
  • Users up to 125 kg (about 276 lb), the SIDIZ rating.
  • Buyers in Korea who will register the chair for the 15-year warranty.

Good to check first

  • SIDIZ does not publish seat height or depth, so try one in a showroom if you can.
  • The Korean store accepts returns within 7 days, but not once the chair is assembled or used.
  • Register the chair to get the 15-year warranty.

The trade-off

A full feature set from SIDIZ's own store, with fewer published dimensions than most rivals.

Value check

Lists at ₩689,000 to ₩859,000 (tax included) at SIDIZ's Korean store, by upholstery; the price shown is converted from won.

Price
₩689,000 – ₩859,000
Load capacity
Maximum load 125 kg
Warranty
15 years

What SIDIZ highlights

  • Ultimate Sync Tilt

    The tilt mechanism uses 138 parts to move the seat and back with you as you lean back. The back angle can be limited, and tilt tension adjusts.

  • Two-layer foam seat

    The seat combines memory foam with MDI foam. SIDIZ says the layers spread pressure across the seat.

  • Lumbar support

    The lumbar support moves up and down to match the curve of your back.

  • Elastomer mesh back

    The back uses a highly elastic poly elastomer mesh. SIDIZ says it spreads pressure and lets heat escape.

  • Adjustable arms and headrest

    The armrests adjust in several directions, and the headrest adjusts in height and angle.

As described by SIDIZ on its official pages; not a Chairpedia assessment.

Before you buy

Fit (official)

  • Rated to 125 kg (about 276 lb).
  • SIDIZ does not publish seat height or depth.

Delivery and setup

  • Weighs about 23.2 kg (about 51 lb).
  • 15-year warranty in Korea after product registration.

Returns (official policy)

  • SIDIZ Korean store: returns within 7 days of receipt.
  • Assembled or used chairs cannot be returned; change-of-mind returns carry a fee.

Sources: SIDIZ Korea, T80 ↗ (checked Oct 11, 2026)

Check price on Amazon

Specs

Size and fit
Load capacity
125 kg (≈ 276 lb)
Adjustments
Recline
Multi-limited tilt (limits backrest recline angle), tilt tension adjustment
Arms
3D adjustable armrests (height, front-back position, left-right angle)
Lumbar support
Lumbar support height adjustment
Headrest
Headrest height / angle adjustment
Build and warranty
Warranty
15-year quality warranty (for customers who register the product)
Chair weight
Product weight about 23.2 kg (≈ 51.1 lb)
Made in
South Korea

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Questions

How much does the Sidiz T80 cost?

It costs ₩689,000 – ₩859,000 including tax at the SIDIZ Official Store (Korea), about $510 – $630 at a fixed exchange rate (checked Sep 2026).

What is the Sidiz T80's weight capacity?

It is rated for Maximum load 125 kg for the T80 (Korea official , T80HLDA1KK), according to Sidiz's official specifications.

Does the Sidiz T80 have a headrest?

Yes. The official specifications list: Headrest height / angle adjustment.

Where can I buy the Sidiz T80?

You can buy it from Amazon or the SIDIZ Official Store (Korea). Check the configuration, price and return terms before ordering.

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Where to buy

Amazon returns are typically 30 days of delivery but set per listing — check before ordering. Some links are affiliate links; Chairpedia may earn a commission at no extra cost to you (disclosure).

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Specs and prices come from the brand sources listed under Specs and next to the price; User Insights link to their originals. Confirm the exact configuration, seller and price before buying. Editorial policy

From ₩689,000

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