
Streamlined One-Piece Mechanism
One-piece integrated mechanism design creates a clean silhouette with no exposed screws, offering a more unified structure and refined tactile experience.
Minimalist form meets functional precision for a sleek and confident appearance.

Explosion-proof gas cylinder
Four-stage explosion-proof gas cylinder enhances safety while delivering strong and stable support.
With 100 mm height adjustment, it allows precise positioning to freely set the ideal sitting height.

Seat, Back & Armrest Linkage Design
Wire-controlled adjustment allows effortless control of seat height and backrest arc without bending forward.
Smooth 106°–122° reclining range helps lock in your ideal comfort point while protecting the spine and reducing strain.

Linkage Device
The integrated linkage device promotes natural movement and ensures long-term sitting comfort.
Automatic and intuitive adjustments adapt smoothly to posture changes, while supporting multiple sitting postures for healthier, more dynamic work.

Easy-to-Clean Mesh Fabric
Made with high-precision mesh fabric, featuring a waterproof and oil-resistant surface for effortless cleaning.
The breathable structure enhances comfort and airflow, while being easy to maintain. Available in eight color options, adding a refined visual accent to modern office spaces.
Learn More About the River F3 Series
The River F3 series is a high-end ergonomic office chair designed for modern office and professional work environments.
River F3 Series Ergonomic Office Chair Usage Solutions
The River F3 Series ergonomic office chair fits seamlessly into modern offices, meeting rooms, and home workspaces, supporting comfort across a wide range of daily tasks.
River F3 Series DIY Customization
Options
Dimension
X7 Series Office Chair Dimensions
| Dimension | Size (mm) |
|---|---|
| Overall Width | 650 |
| Backrest Width | 420 |
| Headrest Width | 260 |
| Headrest Height | 110 |
| Armrest Height Range | 275–350 |
| Seat Height Range | 475–575 |
| Overall Height | 1140–1370 |
| Backrest Height (from seat) | 1035–1180 |
| Backrest Support Height | 580–620 |
| Seat Depth | 440–490 |
| Backrest Depth | 510 |
| Base Width | 505 |
| Base Depth | 640 |
Features
- Ergonomic Backrest Design: The backrest is designed to follow natural body movement, allowing gentle left-right sway as the user shifts posture, helping reduce stiffness during long sitting periods.
- Adjustable Backrest Height: Backrest height adjustment with 5 locking levels allows users to align back support precisely with different body heights.
- Forward-Tilting Seat Function: The seat supports 3-degree forward tilt adjustment, helping maintain a comfortable and efficient typing posture during focused work.
- German Bock Suspension Mechanism: Equipped with a German Bock mechanism, combined with a fabric upholstered seat and seat slider, delivering a smooth suspension-style sitting experience with enhanced stability.
- All-Aluminum Structural Bracket: Armrests, back support bracket, and mechanism housing are all made from high-precision aluminum, ensuring excellent strength, durability, and a premium metallic finish across the entire series.
- Armrest Configuration Options: The series is available with 3D adjustable armrests, supporting height and directional adjustment for daily office use.
- Seat Height Adjustment: Smooth seat height adjustment adapts easily to different desk heights and user preferences.
- Quick Back Tension Adjustment: Back tension can be adjusted quickly, allowing users to control reclining resistance with minimal effort.
- Class 4 Safety Gas Lift: Certified Class 4 gas lift ensures safe, stable, and smooth height adjustment for long-term professional use.
- 350# Aluminum Base: A reinforced 350# aluminum base provides strong load-bearing capacity and long-term structural stability.
- 60mm PU Silent Castors: High-quality 60mm PU castors offer smooth, quiet movement while protecting various floor surfaces.
-
Adjustable Headrest Configuration:
Ergonomic chair designed for the user's head. Antibacterial adjustable headrest (up and down, neckrest and headrest can be switched at will, micro-massage TPU material).
Note: Available on selected models only. -
Headrest-Free Configuration:
Ergonomic chair designed without a headrest, maintaining a cleaner profile while retaining full back support.
Note: Standard configuration on selected models.
X7 Series Office Chair Dimensions
| Dimension | Size (mm) |
|---|---|
| Overall Width | 650 |
| Backrest Width | 420 |
| Headrest Width | 260 |
| Headrest Height | 110 |
| Armrest Height Range | 275–350 |
| Seat Height Range | 475–575 |
| Overall Height | 1140–1370 |
| Backrest Height (from seat) | 1035–1180 |
| Backrest Support Height | 580–620 |
| Seat Depth | 440–490 |
| Backrest Depth | 510 |
| Base Width | 505 |
| Base Depth | 640 |
- Ergonomic Backrest Design: The backrest is designed to follow natural body movement, allowing gentle left-right sway as the user shifts posture, helping reduce stiffness during long sitting periods.
- Adjustable Backrest Height: Backrest height adjustment with 5 locking levels allows users to align back support precisely with different body heights.
- Forward-Tilting Seat Function: The seat supports 3-degree forward tilt adjustment, helping maintain a comfortable and efficient typing posture during focused work.
- German Bock Suspension Mechanism: Equipped with a German Bock mechanism, combined with a fabric upholstered seat and seat slider, delivering a smooth suspension-style sitting experience with enhanced stability.
- All-Aluminum Structural Bracket: Armrests, back support bracket, and mechanism housing are all made from high-precision aluminum, ensuring excellent strength, durability, and a premium metallic finish across the entire series.
- Armrest Configuration Options: The series is available with 3D adjustable armrests, supporting height and directional adjustment for daily office use.
- Seat Height Adjustment: Smooth seat height adjustment adapts easily to different desk heights and user preferences.
- Quick Back Tension Adjustment: Back tension can be adjusted quickly, allowing users to control reclining resistance with minimal effort.
- Class 4 Safety Gas Lift: Certified Class 4 gas lift ensures safe, stable, and smooth height adjustment for long-term professional use.
- 350# Aluminum Base: A reinforced 350# aluminum base provides strong load-bearing capacity and long-term structural stability.
- 60mm PU Silent Castors: High-quality 60mm PU castors offer smooth, quiet movement while protecting various floor surfaces.
-
Adjustable Headrest Configuration:
Ergonomic chair designed for the user's head. Antibacterial adjustable headrest (up and down, neckrest and headrest can be switched at will, micro-massage TPU material).
Note: Available on selected models only. -
Headrest-Free Configuration:
Ergonomic chair designed without a headrest, maintaining a cleaner profile while retaining full back support.
Note: Standard configuration on selected models.
| Features / Configuration | Chair 1 | Chair 2 |
|---|---|---|
| Key Difference (Headrest) | ✓ Antibacterial adjustable headrest (up/down, large/small switching; micro-massage TPU) | ✗ No headrest configuration |
| Product Image |
Chair 1 |
Chair 2 |
| Core Positioning | √ Ergonomic chair for head support | √ Ergonomic chair for head support |
| Backrest Follow-up Function | √ Swings left/right with body movement | √ Swings left/right with body movement |
| Backrest Height Adjustment | √ 5 gears adjustable | √ 5 gears adjustable |
| Seat Forward/Backward Tilt | √ -3° forward/backward tilt adjustment | √ -3° forward/backward tilt adjustment |
| Chassis Configuration | √ German Bork imported chassis (seat depth adjustment, floating sitting experience) | √ German Bork imported chassis (seat depth adjustment, floating sitting experience) |
| Stand Material | √ Full high-precision aluminum alloy (armrests/back connectors/chassis) | √ Full high-precision aluminum alloy (armrests/back connectors/chassis) |
| Seat Type | √ Fabric-padded soft seat | √ Fabric-padded soft seat |
| Armrest Configuration | √ 3D armrests | √ 3D armrests |
| Seat Height Adjustment | √ Supported | √ Supported |
| Backrest Tension Adjustment | √ Quick adjustment | √ Quick adjustment |
| Gas Lift Class | √ Class 4 gas lift | √ Class 4 gas lift |
| Chair Base Material | √ 350# aluminum alloy base | √ 350# aluminum alloy base |
| Caster Configuration | √ 60mm PU casters | √ 60mm PU casters |
| Fabric Material | √ Polymer polka dot fabric | √ Polymer polka dot fabric |
FAQ
Use this text to share information about your product or shipping policies.
Do you ship overseas?
Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. We run discounts and promotions all year, so stay tuned for exclusive deals.
How long will it take to get my orders?
It depends on where you are. Orders processed here will take 5-7 business days to arrive. Overseas deliveries can take anywhere from 7-16 days. Delivery details will be provided in your confirmation email.
Any question?
You can contact us through our contact page! We will be happy to assist you.

