6D Bionic Armrests
360° rotation, front-end & back-end tilt, height, left-right and front-back adjustment, with synchronized recline.
Welax S9 – Ergonomic Office Chair with One-Touch Controls
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Key Features
- Dynamic Adaptive Lumbar: Responsive support that follows your movements.
- 3D Headrest: Adjustable support for your head and neck.
- 5-Position Backrest: Adjustable support for your preferred sitting position.
In Stock,
Est. Arrival: Oct 23 - Oct 29
Services & Benefits
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1-7 Business Day Free Delivery
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60-Day Returns
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Up to 10-year Warranty
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Personal support
Shipping Policy
Free shipping on all orders. Pre-order products are excluded from this shipping timeline. In-stock products typically ship within 1–3 business days, with delivery in 1–7 business days depending on your location. You'll receive a tracking number as soon as your order has been shipped.
Returns Policy
Enjoy 60-day hassle-free returns for eligible products. Warranty coverage varies by product—please refer to the Warranty for details. Please note that compressed sofas are not eligible for return or exchange once unpacked. If you need assistance, our support team is always here to help.
Products Care
Keep your chair in top condition by dusting regularly with a soft cloth and cleaning with mild, non-abrasive products. Avoid direct sunlight, excessive moisture, and harsh chemicals. Periodically check and tighten screws to ensure long-lasting performance.
Welax S9 – Ergonomic Office Chair with One-Touch Controls
Sale price$359.99
Regular price$429.99 Save $70.00
In Stock,
Est. Arrival: Oct 23 - Oct 29
Welax S9 – Ergonomic Office Chair with One-Touch Controls
Trusted by Experts
Real feedback from leading media on the Welax S9 Pro
6D Armrests, Flexible Support In Every Position
Designed To Follow Your Natural Arm Movement For Personalized Support.
Advanced Ergonomic DesignSupport That Adapts To You
3D Adjustable Headrest
Adjusts up to 2.2" in height, with 60° tilt and 60° sub-axis rotation. Find the right position for comfortable head and neck support.
5-Level Backrest Adjustment
Adjust Up To 1.38" To Better Match Your Back. Fine-tune the height to better follow your natural posture and stay comfortable for longer.
Adaptive Lumbar Support
Designed To Follow Your Natural Back Curve. Responsive support keeps your lower back comfortably supported through every position.
Adaptive Lumbar Support
Forward & backward adjustment with a secure locking mechanism.
One-Touch Ergonomic Adjustment : Easily adjust .
Seat Slide
2.2" seat depth adjustment to better fit different leg lengths. Get the support you need without restricting your legs.
Backrest Tilt
105°–116°–130° recline angles for upright work, relaxed seating and deeper reclining. Change your position with ease.
Height Adjustment
3" seat height adjustment for a comfortable sitting position. Find the height that works best for you.
3D Adjustable Headrest
Find The Right Angle And Height For Your Head And Neck.
Headrest tilt range: 60°
Up and down 2.2"
Sub-axis rotation 60°
Imported German mesh fabric
- Flame Retardancy
Complies with US flame-retardant standards to reduce combustion risks. - Tear Resistance
Warp 1,400N, Weft 900N, ensuring stable mesh structure. - Snagging Resistance
Optimized fabric structure minimizes snags. - Abrasion Resistance
Passed 30,000-cycle abrasion test. - Rubbing Color Fastness
Grade 4 for dry rubbing, Grade 3 for wet rubbing.
Tested For Strength & Durability
Rigorous Testing Across Key Components For Reliable Long-Term Performance.
Premium Components, Smooth Performance
Reliable height adjustment, precise control and quiet, effortless movement in every detail.
Class 4 Gas Lift
The gas lift is essential for seat height adjustment and weight support. S9 Pro uses a Class 4 gas lift and has passed 100,000 lift-cycle fatigue testing for reliable long-term performance.
Durable Silent Casters
Designed for smooth, quiet movement, the durable casters help reduce friction and the risk of floor scratches, making them suitable for everyday use.
Aluminum Alloy Base
The base provides essential support and stability for the chair. S9 Pro features an aluminum alloy base that has passed a 136 kg impact test and a 1,136 kg static load test.
Precision-Tuned Mechanism
The mechanism connects the seat to the gas lift and controls reclining and locking. S9 Pro is precisely tuned for smooth, stable and controlled adjustments.
Real People. Real Comfort.
From focused work to relaxed moments, see how S9 Pro fits into real everyday setups.
We Ditched Gaming Chairs for THIS Welax S9 - Mind = BLOWN 🔥
Welax S9 Pro Review | Premium Ergonomic Office Chair Tested
The Most Comfortable Mesh Chair - Welax S9 Pro Review
I Didn't Get Gridfinity... Then I Tried It.
¡INCREÍBLE! Welax S9 Pro: La silla ergonómica de "un solo toque"... ¿MΔGIA o Marketing?
Product Information
Product Dimensions
28.1″ W × 28.1″ D × 45.5″–52.8″ H
Recommended User Height
59"–75"
Weight Capacity
300 lbs
Warranty
3 Years
Product Weight
43.7 lbs (No Footrest) / 47.2lbs (With Footrest)
Package Dimensions
31.5″ × 25.6″ × 20.9″
Package Weight
54.9lbs (No Footrest) / 58.4lbs (With Footrest)
Number of Packages
1
Product Dimensions
28.0" W × 28.0" D × 43.5"–51.2" H
Recommended User Height:
59"–75
Weight Capacity
330 lbs
Warranty
10 Years
Product Weight
49.6 lbs
Package Dimensions
31.5" W × 21.7" D × 18.5" H
Package Weight
58.2 lbs
Number of Packages
1
FAQ
How does the S9’s adaptive lumbar support work?
The adaptive lumbar support follows the natural curve of your lower back and adjusts up and down as you move. It also allows front-to-back adjustment and can be locked into your preferred position.
Is the S9 comfortable for long hours of work?
Yes. The S9 is designed to adapt to you rather than keep you in a fixed position. The seat height, seat depth, backrest, lumbar support, armrests, and headrest can all be adjusted to suit your preferences.
Is the S9 difficult to assemble?
Not at all. The S9 comes with the necessary tools and instructions and takes about 15–20 minutes to assemble. No special tools or professional experience required.
What makes the S9’s one-touch adjustment different?
Instead of reaching for multiple knobs and levers, the S9 puts key adjustments within easy reach. Adjust the seat height, seat depth, and recline more easily while staying seated.
Will the S9 fit my body?
The S9 is designed for users 59"–75" tall and up to 300 lbs. With multiple adjustment points, you can fine-tune the chair to your body. For parents or smaller adults, we recommend paying particular attention to seat height and depth to ensure your feet rest comfortably on the floor.
What’s the difference between the S9 and S9 Pro?
Both models offer ergonomic support and multiple adjustment options. The S9 Pro adds several premium upgrades, including 6D armrests, an aluminum base, and imported German mesh for enhanced adjustability, stability, and breathability.
