Designed Around Her Curves
Designed specifically for women, the W-shaped cushion helps distribute pressure evenly across the hips and thighs, while high-resilience foam provides responsive support and lasting comfort.
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Welax S4 Pro – Ergonomic Office Chair with Flip-Up Armrests
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Key Features
- W-Shaped Comfort Seat: Structured foam for lasting support, with easy-clean fabric.
- Flip-Up Armrests: Flip up easily to free up space when needed.
- 3-Button Easy Adjustment: Adjust seat depth, recline, and height with ease.
Pre-order ·
Estimated Shipping Date
Oct 31, 2026
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 S4 Pro – Ergonomic Office Chair with Flip-Up Armrests
Sale price$319.99
Regular price$369.99 Save $50.00
Pre-order ·
Estimated Shipping Date
Oct 31, 2026
Welax S4 Pro – Ergonomic Office Chair with Flip-Up Armrests
More Colors, More Style
Choose a shade that complements your space and reflects your style.
Softness You Can Feel
Soft, smooth fabric for comfortable everyday sitting.
A Fabric Made for Everyday Life
Soft and smooth to the touch, the fabric offers a comfortable feel while making everyday care simple. From coffee spills to everyday messes, it’s easy to wipe clean and keep looking fresh.
Ergonomic Design for Her
Thoughtful Adjustments, Natural Support
Flip-Up 360° Armrests
Flip up to save space, with 360° rotation and front-to-back adjustment for flexible arm support.
3D Adjustable Headrest
60° Tilt · 60° Rotation · 0.79" Height Adjustment
Adjust the height and angle to find comfortable support for your head and neck.
Adaptive Lumbar Support
6 height positions with front-to-back adjustment and lockable support for a more precise fit.
Adjustable Seat Depth
Made with women’s proportions in mind, with 2.3" of depth adjustment for a more comfortable fit.
Made for Every Moment
From work to relaxation, comfort that moves with you.
Casual Time
Leisure Time
Meeting Time
Work Time
Support That Fits Her
3-Button Easy Adjustment
Simple controls put your key adjustments within easy reach.
Recline
Adjust the recline angle to your preferred position.
Seat Depth
Adjust the seat depth for a better fit.
Seat Height
Find the right height for comfortable support.
Precision Craftsmanship. Defined Excellence
Ergonomic support in every seating position
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.
Class 4 Gas Lift
The gas lift is essential for seat height adjustment and weight support. S4 Pro uses a Class 4 gas lift and has passed 100,000 lift-cycle fatigue testing for reliable long-term performance.
Tested For Strength & Durability
Rigorous Testing Across Key Components For Reliable Long-Term Performance.
Product Information
Product Dimensions
28.0" W × 28.0" D × 43.5"–51.2" H
Recommended User Height
61"–73"
Weight Capacity
300 lbs
Product Weight
39.0 lbs
Warranty
3 Years
Package Dimensions
28.7" W × 23.6" D × 16.9" H
Package Weight
50.0 lbs
Number of Packages
1
FAQ
Is the S4 Pro easy to adjust?
Yes. The S4 Pro uses intuitive cable controls that keep key adjustments within easy reach. Adjust the seat height, seat depth, and recline without reaching under the seat.
Does the S4 Pro have enough room for larger users or cross-legged sitting?
Yes. With an 18.3" wide seat and adjustable seat depth, the S4 Pro provides more room for your hips and legs, making it comfortable for different sitting styles.
Can the S4 Pro’s 3D headrest be adjusted?
Yes. The 3D headrest adjusts in height and angle to provide comfortable support whether you’re sitting upright or reclining.
Are the S4 Pro’s armrests adjustable?
Yes. The armrests can flip up and adjust in multiple directions, making it easy to find comfortable arm support for typing, gaming, reading, or relaxing.
What’s the difference between the S4 and S4 Pro?
The S4 focuses on compact storage with its foldable backrest. The S4 Pro offers enhanced comfort and adjustability with cable controls, a wider seat, multi-directional armrests, and a 3D headrest.
Is the S4 Pro difficult to assemble?
Not at all. The S4 Pro comes with the necessary tools and instructions and takes about 15–20 minutes to assemble. No special tools or professional experience required.
