Zero-Gravity Reclining
Advanced recline comfort
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Sihoo Doro C300 Ultra V2 Zero‑Gravity Full‑Body Adaptive Ergonomic Chair
Sale price
$609.99
Regular price
$679.99
Unit price
Benefits
Benefits
- Zero-Gravity Space Chassis with flexible fiberglass plates for a lighter, weightless-like recline
- 4-spring pressure-relief suspension cushions your body and adapts as you move
- Full-body adaptive support with DynaCore™ 4-zone synchronized movement
- SyncroFlex™ Back-Glide follows your body naturally as you lean and recline
- Self-Adaptive Lumbar Support 2.0 stays aligned with your lower back as you move
- 8D synchronized armrests and a 28% larger 3D headrest for personalized comfort
- Aerospace-grade aluminum alloy backrest frame for a premium support structure
- Easy-access controls for seat height, depth, recline, and recline tension
Promises
Promises
- 30-Day Free Returns.: Try the chair for 30 days. If it’s not for you, feel free to return it.
- 3-Year Warranty: Enjoy lasting comfort and peace of mind with our 3-year warranty.
- Free Shipping: Receive your chair in just 5-7 days, in US and CA.
- Satisfaction Guarantee: For any issues, contact support_us@sihoo.com for prompt assistance and guaranteed satisfaction.
Payment methods
Your payment information is processed securely and the price includes regional tax.
How to choose a right ergonomic office chair?
Check out our buying guide for you!
What is the Zero-Gravity Space Chassis?
The Zero-Gravity Space Chassis combines flexible fiberglass plates with a spring suspension system to create a lighter, smoother reclining experience. It helps you lean back naturally with a weightless-like feel.
How does the 4-spring suspension system work?
Four springs cushion your body as you sit down and respond to changes in posture. This helps make sitting and shifting positions feel smoother and more comfortable.
What is DynaCore™ Full-Body Support?
DynaCore™ connects the headrest, backrest, lumbar support, and armrests so they move together as you change positions. It helps keep your body supported whether you're working upright or reclining.How does the SyncroFlex™ Back-Glide work?SyncroFlex™ uses a dual-track, dual-spring design that lets the backrest glide with your back as you recline. This helps maintain comfortable contact and support as your posture changes.
How do I know if the C300 Ultra V2 will fit me?
The C300 Ultra V2 offers adjustable seat height, seat depth, backrest height, lumbar support, headrest, and armrests to help you find a comfortable fit. Check the product dimensions to make sure it suits your height and body size.
Who is the C300 Ultra V2 best for?
It's ideal for anyone who spends long hours sitting and wants extra comfort when reclining. Whether you're working, gaming, or relaxing, its adaptive support moves with you throughout the day.
What does the 3-year warranty cover?
The C300 Ultra V2 comes with a 3-year warranty covering manufacturing defects. If a covered issue occurs, we'll provide replacement parts at no additional cost. Normal wear and tear and damage caused by misuse are not covered.
DORO C300 ULTRA V2
The First Zero‑Gravity Full‑Body Adaptive Ergonomic Chair
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Highlights
Full-Body Adaptive Support
Support that moves with you
Dynamic Lumbar Support 2.0
Less manual readjusting
SyncroFlex Technology
Smooth lumbar-back movement
4-Zone Synchronized Support
Coordinated comfort
8D Bionic Armrests
Flexible arm support
Ultra-Wide 3D Headrest
28% larger support area
Aluminum Alloy Back Frame
Premium structural design
DYNAMIC ANTI-GRAVITY CHASSIS
A Lighter Way to Recline.
Flexible support and spring suspension make reclining feel lighter.
ANTI-GRAVITY MECHANISM
Lean Back. Feel Lighter.
Flexible fiberglass plates respond as you recline, creating a floating-like sensation that makes leaning back feel more natural.
Made to Flex With You.
PRESSURE-RELIEF SUSPENSION
A Softer Way to Sit.
Four springs cushion you as you sit and adapt as you move.
Soft Landing. Smooth Movement.
FULL-BODY SUPPORT
Comfort From Head to Toe.
Support where you need it, from your head and back to your arms, hips, and legs.
DYNACORE™ SYNCHRONIZED SUPPORT
Moves With You.
Headrest, backrest, lumbar support, and armrests move together as you change positions.
Four Zones. One Movement.
LESS ADJUSTING. MORE SITTING.
Just Sit How You Like.
Sit upright, lean back, or shift around. Your support adjusts with you, so you can spend less time adjusting your chair.
Ready For Every Position
SYNCROFLEX™ BACK-GLIDE
Made to Move With Your Back.
The backrest glides as you lean and recline, staying comfortably in contact as your position changes.
Glides · Adapts
ADJUSTABLE BACKREST HEIGHT
Find Your Sweet Spot.
Move the backrest up or down to place support right where it feels best for you.
7 Height Settings · 3.2" Range
DOMINO™ SACRAL-LUMBAR SUPPORT 2.0
Right Where You Need It.
ADJUSTABLE SACRAL-LUMBAR SUPPORT
Find Your Fit.
Move the support up or down, then choose from 3 levels to find the position and feel that works for you.
Adjusts · Responds
DOMINO™ 2.0
Better Than Before.
More coverage, more ways to adjust, and a softer response. Three key upgrades make Domino™ 2.0 more comfortable and adaptable than before.
More Room to Feel Supported.
A larger support area spreads support across more of your lower back and sacrum for a more comfortable, wrapped-in feel.
3 Support Levels For Your Way.
Choose from 3 support levels to dial in a softer or firmer feel for work, gaming, or winding down.
Softer Where It Matters.
A dedicated flexible spring adds gentle cushioning, softening pressure as you lean into the lumbar support.
8D Bionic Armrests
More Ways to Move. More Ways to Sit.
Adjust up, down, forward, back, rotate, or tilt. With 8 directions of movement, the armrests adapt to the way you sit, work, and play. Keeping your arms supported in every position.
Ultra-Wide 3D Headrest
More Room to Lean Back
Now 28% wider, the 3D headrest gives your head and neck more room to rest. Adjust it in three directions for comfortable support, whether you’re sitting centered or leaning to the side.
105°, 120°, 135° Recline
Three Angles. Whatever the Moment Calls For.
Switch between 3 recline positions for work, play, or downtime, all with full-body support.
105° Stay Focused
A comfortable angle for getting work done.
120° Lean Back
Kick back for gaming, reading, or a quick break.
135° Fully Recline
Stretch out, settle in, and relax.
01 — Adjustable Seat Depth
Made for Bigger Builds.
Slide the seat up to 1.6" for a better fit.
Why Upgrade to Ultra V2?
C300 Ultra V2
C300 Pro V2
Chassis
Smart Weight-Sensing Mechanism
Multi-Point Ergonomic Support
Recline Experience
Weightless-Like Recline
Weight-Responsive Recline
Suspension
4-Spring Pressure-Relief Suspension
Automatic Recline Resistance
Seat Fit
1.6" Adjustable Seat Depth
1.6" Adjustable Seat Depth
Specs
| Product Name | Sihoo Doro C300 Ultra V2 Zero‑Gravity Full‑Body Adaptive Ergonomic Chair |
|---|---|
| Materials | Mesh Back and Seat; Soft PU Coated Armrests |
| Armrests | Mesh Back/Seat, PU Armrests, Aluminum Frame |
| Maximum Load | Up to 330 lbs |
| Seat Depth | 16.9" - 18.5" |
| Seat Width | 20.5" |
| Backrest Height | 21.1" - 24.2" (above seat) |
| Recline Angles | 105°, 120°, 135° |
| Net Weight | 57.10 lbs |
| Gross Weight | 76.46lbs |
| Color Options | Black, White |
