Duorest · Office Chairs

Duorest Alpha

People with back pain who want a dual-backrest chair with two independent back pads.

₩413,000 – ₩520,000

≈ $300 – $380

  • 3 / 1-year warranty
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Summary

A Duorest chair with a split backrest whose two halves move separately.

Best for

  • People curious about a two-part backrest instead of a single back.
  • Users up to 300 lb, Duorest's standard rating.
  • Choosing between a fabric seat and a mesh seat.

Good to check first

  • Duorest does not publish seat height or depth, so ask the seller for them.
  • The headrest is an add-on accessory, so order it with the chair if you want one.
  • The mesh-seat version weighs about 41 lb against 35.3 lb for fabric.

The trade-off

A distinctive split back and synchronized tilt, with fewer published measurements.

Value check

Lists at ₩413,000 to ₩520,000 at the Duoback official store in Korea; the price shown is converted from won.

Price
₩413,000 – ₩520,000
Warranty
3 / 1 years

What Duorest highlights

  • DUOREST split backrest

    The backrest is split into two halves that move with you. Duorest calls this its own DUOREST System.

  • Synchronized tilt

    Seat and back move together at a 3:1 ratio, and the back locks in three positions.

  • Adjustable back

    The backrest adjusts 43 mm in height and 33 mm in width.

  • 3D arms and headrest option

    The arms adjust in height and depth and the caps pivot 17° each way. The optional headrest adjusts 49 mm and pivots 63°.

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

Before you buy

Fit (official)

  • Rated to 300 lb.
  • Overall about 634 mm W × 1210 mm H × 622 mm D.
  • Duorest does not publish seat height or seat depth.

Delivery and setup

  • Chair weight 16 kg (35.3 lb) fabric, 18.6 kg (41 lb) mesh seat.
  • Warranty: 3 years on the body frame; 1 year on mechanism, cylinder, foam and casters.

Sources: Duorest, ALPHA ↗ (checked Oct 11, 2026) · Duorest, ALPHA user guide ↗ (checked Oct 11, 2026) · Duorest, Warranty ↗ (checked Oct 11, 2026)

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Versions and options

  • Headrest option

Specs

Size and fit
Sizes
about 634 mm x 1210 mm x 622 mm (W x H x D) (25.0 x 47.6 x 24.5 in (brand also states these inches))
Load capacity
Standard 300 lbs. weight capacity
Adjustments
Recline
Back reclines 18° from upright position; 3:1 back to seat synchronous movement with 3 position backlock
Arms
3D arms: height adjustment range 72mm (2.8”), front-to-back adjustment range 40mm (1.6”), pivoting arm caps 17º inward and 17º outward
Headrest
Optional Headrest accessory adjusts 49mm (1.9”) vertically; pivoting range 63º
Build and warranty
Warranty
3 Year Body Frame; 1 Year Mechanism, Cylinder, Form, Casters; 1 Year Flexible Rubber Connector, Seat Pan Materials
Chair weight
16 kg18.6 kg

About Duorest

Founded
1987

Duorest dates from 1987, gained ISO 9001 and 14001 certification in 2000 and GREENGUARD Gold in 2019.

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Questions

How much does the Duorest Alpha cost?

It costs ₩413,000 – ₩520,000 at the Duoback Official Store (Korea), about $300 – $380 at a fixed exchange rate (checked Sep 2026).

What is the Duorest Alpha's weight capacity?

It is rated for Standard 300 lbs. weight capacity in Alpha, according to Duorest's official specifications.

Does the Duorest Alpha have a headrest?

Yes, as an option. Duorest sells the Alpha with or without a headrest.

What sizes or versions of the Duorest Alpha are there?

It comes in about 634 mm x 1210 mm x 622 mm (W x H x D).

Where can I buy the Duorest Alpha?

You can buy it from Amazon or the Duoback 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

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