prime day 2026

World's Leading Ergonomic Chair Brand

122+

Countries. Recognized worldwide.

2000+

Certifications by renowned media worldwide

2.6M+

Customer Recognition

Years of Company History

Your Prime Day Journey

May 20 – Jun 2 Early Access

£25 Voucher +

Subscribe & get £25 voucher (redeemable June 3–30)

Jun 3 – Jun 30 Mega Sale

4 Rewards +

Subscribe & get £25 voucher (redeemable June 3–30)

Purchase & Win

Purchase C300 Pro V2 during the sales period toenter a prize draw for a chance to win a free unit.

Spin the Wheel

Join Spin the Wheel for extra rewards includingexclusive discounts, free gifts & more.

120 Days Price Protection

Upgraded from 30-day protection

Bundle & Save

Buy Any 3+ → 3% OFF, Buy Any 6+ → 5% OFF, BuyAny 10+ →10% OFF

Prime Day Sale

💥Prime Day’s Lowest Price Anywhere

June 3 – June 30

C Series Ergonomic Office Chair

As SIHOO's flagship ergonomic chair series, the C Series has won customer recognition for its automatic lumbar support function.

M Series Ergonomic Office Chair

A high-quality, ergonomic entry-level office chair – ideal for office workers who spend long periods of time sitting.

Doro C300 Pro V2 Full-Body Adaptive Ergonomic Chair

£459.99 ￡???.??

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Overview

Sihoo Doro C300 Pro V2 delivers adaptive, full-body support for all body types and activities. Supercharged by the innovative DynaCore and SyncroFlex systems, along with Self-Adaptive Dynamic Lumbar Support 2.0, 8D bionic armrests, an ultra-wide 3D headrest, and more, it sets a new standard in...

Highlights

Full-Body Follow-Up Support

Adjustable Sacral Support

8D Armrests

Automatically Adjusting Back Support

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Doro C300 Pro Ergonomic Office Chair

£399.99 ￡???.??

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Overview

3D Headrest - Adjusts 4.5cm vertically, 6.5cm horizontally, and rotates 20° for complete neck and shoulder support Domino Dynamic Lumbar Support - Auto-adaptive system that continuously adjusts to match your spine's natural S-curve Flexible and Liftable Backrest - 6cm height adjustment range with triangular mesh...

Highlights

Dynamic Lumbar Support

One-Touch Chassis Control

Full-Coverage Back Support

Multi-directional Armrests

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Doro C300 Ergonomic Office Chair

£339.99 ￡???.??

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Overview

Adaptive lumbar cushion: Automatically adjusts to various sitting and reclining positions, ensuring consistent support at all times. 3D mechanical headrest: Wide and adjustable in multiple directions, providing tailored support for different sizes and postures. 4D armrests: Adjustable in height, depth, width, and rotation, they provide...

Highlights

Dynamic Lumbar Support

Multi-directional Armrests

3D Headrest

Natural Curve Support

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M18 Classic Office Chair

£169.99 ￡???.??

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Overview

Sihoo M18, a time-tested ergonomic office chair designed with a w-shape cushion, a breathable mesh seatback, and dual-adjustable lumbar support, among other features. This chair makes ergonomic comfort effortless and within reach, making it an excellent choice to begin your journey towards comfortable and healthy...

Highlights

Breathable Mesh Seat Cushion

Ergonomic Chair Back

Adjustable Lumbar Support

2D Adjustable Armrests

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M57 Classic Office Chair

£229.99 ￡???.??

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Overview

Max load 150 kg / 330 lbs 3D adjustable armrests (height / depth / rotation) Dual-adjustable lumbar support (up-down 4.8 cm, forward-back 3 cm) Full breathable mesh design Integrated S-shaped backrest Reclines up to 126° Adjustable headrest (height 10 cm, rotation 45°) BIFMA & SGS...

Highlights

Premium Material

Adjustable Lumbar Support

2D Adjustable Armrests

Ergonomic Chair Back

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M59AS Ergonomic Office Chair

£179.99 ￡???.??

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Overview

Experience full support and comfort with the Sihoo M59AS, featuring a dual-section backrest that adapts to your posture. The 3D coordinated, flip-up armrests provide customizable support for various sitting positions and offer the flexibility to tuck the chair neatly under a desk for maximum space...

Highlights

Widened Back Support

Foldable Armrests

2D Adjustable Headrest

Breathable Mesh Seat Cushion

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SPIN & WIN CHAIR
— Unlock Your Prime Surprise

INNOVATIVE & TRUSTWORTHY

Praise for the SIHOO

“

Sihoo's Office Chair Is An Affordable Alternative To Herman Miller's Classic Aeron.

“

The Sihoo Doro C300 impresses with its sophisticated ergonomics, high level of comfort, and a modern design that fits seamlessly into the office and home.

“

The Sihoo C300 is an all-around well-developed office chair.

“

The Doro-C300 Ergonomic Office Chair is a best-in-class option for comfort, but not in the way you're probably used to quantifying chairs.

“

Sihoo Doro-C300 is an excellent chair that is thoroughly recommendable to anyone looking for a new office staple.

“

Sihoo's Doro-C300 ergonomic office chair is a game-changer for individuals who spend long hours sitting at their desks.

World's Leading Ergonomic Chair Brand

146+

Countries. Recognized worldwide.

2000+

Certifications by renowned media worldwide

2.6M+

Customer Recognition

Years of Company History

FAQs

What is the difference between Early Access and the Prime Day Mega Sale?

The Early Access period (2026.05.20–06.02) is a preheat period where you can explore upcoming deals and claim your £25 OFF Prime Day voucher.

How can I get the £25 OFF voucher, and when can I use it?

You can claim the £25 OFF voucher by subscribing during the Early Access period.The voucher can only be redeemed during the Prime Day Mega Sale period (2026.06.03–06.30).

Can I enter the giveaway if I purchase the C300 Pro V2?

Yes. Customers who purchase the C300 Pro V2 during the Mega Sale period will automatically be entered into a prize draw for a chance to win a free unit.

How does the Spin the Wheel activity work?

During the Mega Sale, you can participate in the Spin the Wheel game directly on the campaign page for a chance to win extra rewards such as discount codes, surprise gifts. Each user is subject to the campaign rules shown on the page.

Can I still enjoy discounts if I miss Early Access?

Yes. Early Access is only for early voucher collection. The main discounts and all campaign benefits are available during the Prime Day Mega Sale period.

What is Price Protection during the Prime Day Mega Sale?

Yes. If the price drops within 120 days after your purchase, you may be eligible for a price adjustment.

World's Leading Ergonomic Chair Brand

Your Prime Day Journey