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Doro C300 Ultra V2 Zero‑Gravity Full‑Body Adaptive Ergonomic Chair

£579.99 £649.99
Style
Version

Description

The Sihoo Doro C300 Ultra V2 is the pinnacle of adaptive seating—a chair that doesn't just support you, but moves with you. Engineered with a premium Zero‑Gravity Space Chassis and an aerospace‑grade aluminum alloy backrest frame, the Ultra V2 represents the most advanced iteration of Sihoo's full‑body adaptive ergonomic platform.

Whether you're working, gaming, or unwinding, the C300 Ultra V2 delivers continuous, next‑level comfort that adapts to every shift in your posture—so you stay supported without constantly readjusting.

The Zero‑Gravity Space Chassis – Redefining Recline

At the heart of the Ultra V2 lies the Zero‑Gravity Space Chassis—an advanced recline and suspension system exclusively designed for this flagship model.

Full‑Body Adaptive Support – DynaCore System

The Ultra V2 is supercharged by the innovative DynaCore full‑body support system, which seamlessly adapts to every movement you make.

  • Self‑Adaptive Dynamic Lumbar Support 2.0 – automatically tracks your body movement and stays aligned with your spine curve through every shift
  • SyncroFlex Lumbar‑Back Gliding Technology – dual‑rail, dual‑spring structure that follows the sacral curve dynamically as you recline
  • 4‑Zone Synchronized Tracking – coordinated support across head, back, waist, and arms that moves together with your body
  • 8D Bionic Armrests – fully adjustable in 8 dimensions, including synchronized movement during recline
  • Ultra‑Wide 3D Mechanical Headrest – 28% larger support area with height, rotation, and depth adjustment

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Highlights at a Glance

SYNCHRONIZED

Full-Body Support That Moves with You

Enjoy real-time, full-body support with the DynaCore system that tracks your movement and synchronizes the headrest, backrest, lumbar support and armrests to keep you comfortable as you shift, twist, or recline.

Forget About Readjusting

Forget About Readjusting

Stay supported and comfortable in every moment, as support moves with you.

For Every Part of You

For Every Part of You

Every part of the chair moves in harmony, delivering seamless full-body adaptive support.

Comfort That Keeps Up With You

Comfort That Keeps Up With You

Continuous full-body support keeps you focused, comfortable, and effortlessly in flow—all day long.

Self-Adaptive Dynamic Lumbar Support 2.0

Cradle Your Lower Back, Perfectly Your Way

Self-Adaptive Dynamic Lumbar Support 2.0 now features a wider support area that fully hugs the lower back, a pressure-relief spring that better adapts to horizontal movement, and three fine-tuning positions that range from a natural S-curve fit to full sacrum support.

Self-Adaptive Dynamic Lumbar Support 2.0

Cradle Your Lower Back, Perfectly Your Way

Self-Adaptive Dynamic Lumbar Support 2.0 now features a wider support area that fully hugs the lower back, a pressure-relief spring that better adapts to horizontal movement, and three fine-tuning positions that range from a natural S-curve fit to full sacrum support.

8D Bionic Armrests

Arm Support Beyond Imagination

The armrests adjust in 8 directions — up and down, forward and back, 360° rotation, and tilt, to name just a few. Whether you are working in a relaxed recline or enjoying your favorite handheld game, your arms stay supported throughout.

8D Bionic Armrests

Arm Support Beyond Imagination

The armrests adjust in 8 directions — up and down, forward and back, 360° rotation, and tilt, to name just a few. Whether you are working in a relaxed recline or enjoying your favorite handheld game, your arms stay supported throughout.

Ultra-Wide 3D Headrest

Expansive Comfort. Precision Alignment.

The headrest now offers a 28% larger support area that envelops your neck and adjusts in three directions, allowing you to comfortably rest your head—precisely, even to the side—during work or breaks.

Ultra-Wide 3D Headrest

Expansive Comfort. Precision Alignment.

The headrest now offers a 28% larger support area that envelops your neck and adjusts in three directions, allowing you to comfortably rest your head—precisely, even to the side—during work or breaks.

Comfort That's Future-Proof

Made from premium materials, every Sihoo Doro C300 Ultra V2 unit is BIFMA-, SGS-, and TÜV-certified and rigorously tested to empower work, creation, and gaming for years to come.

Comfort That's Future-Proof

Made from premium materials, every Sihoo Doro C300 Ultra V2 unit is BIFMA-and TÜV-certified and rigorously tested to empower work, creation, and gaming for years to come.

Focus on details

Rock-Solid Foundation. Tested Beyond Limits.

With a 1136 kg static load rating, the aluminum alloy base stays firmly planted, giving you unshakable confidence through every recline.

Zero Pressure. Every Stature.

Eliminate hip and thigh strain with even pressure distribution and a 4 cm adjustable seat depth for the perfect personal fit.

1136 kg Static Load. Absolute Stability.

The five-star aluminum alloy base is tested to withstand extreme pressure — engineered to eliminate wobble entirely, no matter how you move.

Complete Control within Your Reach

Easily adjust height, recline, and seat depth with a conveniently positioned right-side handle—no more fumbling or reaching down.

Enlarged view

Tech Specs

C300 Ultra V2 vs. Pro V2

Upgrade C300 Ultra V2 C300 Ultra V2
C300 Pro V2 C300 Pro V2
Chassis/Base
Zero‑Gravity Space Mechanism
Wire‑Controlled Base
Backrest Material
Aluminum Alloy (upgraded for durability and premium feel)
Plastic (standard)
Seat Material
Mesh
Mesh
Full‑Body Adaptive Function
Yes (with dynamic tracking)
Yes (with dynamic tracking)
Armrests
8D Synchronized Arm Support
8D Synchronized Arm Support
Seat Fit
Pressure-Relief Seat with 1.6" Depth AdjustmentMore personalized leg support and a better fit across heights.
Pressure-Relief Seat with 1.6" Depth AdjustmentMore personalized leg support and a better fit across heights.

FAQs

What is the Zero‑Gravity Space Chassis?

It is an advanced recline and suspension system exclusively designed for the C300 Ultra V2. It combines an aerospace‑grade elastic frame with a dynamic spring mechanism to deliver a weightless, adaptive seating experience – hence the name “Zero‑Gravity Space Chassis.”

How does the “anti‑gravity” mechanism work?

The chassis integrates aerospace‑grade fiberglass elastic plates – the same material used in spacecraft structures. These plates provide exceptional flexibility and resilience, allowing the backrest to follow your natural recline arc. The result is a gravity‑defying motion that feels genuinely weightless, reducing spinal pressure during prolonged sitting.

How does C300 Ultra V2 differ from wired control base ergonomic chairs?

The Space Chassis, by contrast, uses elastic plates and springs to automatically adapt to your body movement, providing a smoother, more natural recline with zero‑gap support at any angle. It also absorbs shock and reduces fatigue more effectively.

What is the Dynamic Full-Body Support System?

The Dynamic System coordinates lumbar support, backrest, headrest and armrests so that they respond to your movements and provide continuous full-body support.

What is the SynchroFlex backrest?

When you sit down, the chair reacts to your body weight. The dual-spring and dual-track system automatically adapts to the natural curvature of your spine. When you lean back, the movement follows smoothly, ensuring a personalized seating experience.

What does the warranty cover?

The warranty covers manufacturing defects for 3 years from the date of delivery. Replacement parts will be provided free of charge during this period. Normal wear and tear and damage caused by improper use are excluded.

Sihoo Doro

Doro C300 Ultra V2 Zero‑Gravity Full‑Body Adaptive Ergonomic Chair

From £579.99 £649.99

The Sihoo Doro C300 Ultra V2 is the pinnacle of adaptive seating—a chair that doesn't just support you, but moves with you. Engineered with a premium Zero‑Gravity Space Chassis and an aerospace‑grade aluminum alloy backrest frame, the Ultra V2 represents the most advanced iteration of Sihoo's full‑body adaptive ergonomic platform.

Whether you're working, gaming, or unwinding, the C300 Ultra V2 delivers continuous, next‑level comfort that adapts to every shift in your posture—so you stay supported without constantly readjusting.

The Zero‑Gravity Space Chassis – Redefining Recline

At the heart of the Ultra V2 lies the Zero‑Gravity Space Chassis—an advanced recline and suspension system exclusively designed for this flagship model.

Full‑Body Adaptive Support – DynaCore System

The Ultra V2 is supercharged by the innovative DynaCore full‑body support system, which seamlessly adapts to every movement you make.

Style

  • Black
  • White

Version

  • Footrest
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