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Experience personalized ergonomic comfort with adaptive lumbar support, customizable adjustments, and breathable mesh. Built to support the way you work, sit, and relax.
Ergonomic Chair in a Modern RGB Gaming Room.
Explore how thoughtful comfort fits into your everyday spaces.
Stay supported and comfortable while working, studying, or tackling daily tasks.
Lean back and enjoy a more relaxed position for reading, watching videos, or taking a short break.
Recline fully, extend the footrest, and stretch out comfortably during your downtime.
Explore the thoughtful details behind every part of the chair.
Customized Head & Neck Support for Lasting Comfort.
Raise or lower the headrest by up to 1.77" to match your preferred head and neck position.
Tilt the headrest up to 60° to find a comfortable angle for your head and neck.
Thoughtfully selected materials, made for lasting comfort.
Engineered for lasting comfort, Flextex® performance mesh combines high resilience, flexible stretch, and reliable support. Its body-contouring structure adapts naturally to your movements, while its smooth texture and durable construction enhance everyday comfort. Designed with recyclability in mind, it balances performance, comfort, and sustainability.
The Quelsoft ergonomic office chair features an SGS-certified Class 4 gas lift tested through 120,000 rotational cycles for lasting performance. With a 1.5 mm outer wall and 2.0 mm inner tube, its robust construction delivers reliable support, smooth height adjustment, and dependable durability for everyday use.
The Quelsoft ergonomic office chair features a robust 8-point alloy base tested to withstand 1,136 kg of static pressure. Smooth 360° PU silent casters provide quiet, effortless mobility across different floor surfaces. Tested for 100,000 cycles of obstacle-crossing and flat-surface rolling, they deliver reliable durability for everyday use.
The Quelsoft ergonomic office chair features a thickened, heavy-duty steel mechanism designed for enhanced strength and stability. Its robust construction provides reliable support for everyday use, while the integrated adjustment system allows smooth reclining and customized seating comfort.
Engineered with a durable mechanical structure and tested for over 120,000 fatigue cycles, exceeding BIFMA testing benchmarks for lasting strength, stability, and reliability.
Gas Lift Durability Test
Armrest Fatigue Test
Seat Fatigue Test
Backrest Fatigue Test
Caster Fatigue Test
Mechanism Fatigue Test
Explore the product specifications and material details.
Product Name
Core100 Pro
Warranty
5 Years
Product Dimensions
26.97″ W × 25.39–27.76″ D × 46.06–51.38″ H
Product Weight
26 kg (57.3 lbs)
Recommended User Height
59"–75"
Weight Capacity
330 lbs
Backrest
Aluminum Alloy Frame + PA + Glass Fiber
Upholstery
Cloud Mesh Fabric
Gas Lift
SGS-Certified Class 4 Gas Lift
Base
Aluminum Alloy 5-Star Base
Casters
PU Silent, Shock-Absorbing Casters
Headrest *1
Backrest *1
Seat Cushion *1
Armrest *2
Seat Mechanism *1
Footrest *1
Gas Cylinder *1
5-Star Base *1
Wheels *5
Yes! The Quelsoft Core100 Pro is designed with easy assembly in mind. It comes with a detailed instruction manual and all the necessary tools, making the process straightforward even for first-time chair owners.
Most users can complete the assembly in approximately 15–20 minutes without professional assistance. Some components come pre-assembled to make positioning and installation easier, so you can quickly set up your chair and enjoy its ergonomic support.
The Quelsoft Core100 Pro is designed to accommodate users approximately 155–200 cm (5'1"–6'7") tall.
With its adjustable headrest, 3D dynamic lumbar support, 3D armrests, and 2-inch seat depth adjustment, you can customize the chair to better fit your body and preferred sitting position. Whether you're working, studying, or gaming, its adjustable design helps you find a more comfortable and personalized seating experience.
The Quelsoft Core100 Pro supports up to 330 lbs (approximately 150 kg). It features a sturdy five-star base, a quality gas lift, and a stable seat structure to provide reliable support for everyday use.
Whether you're working, studying, or relaxing, its durable construction provides a stable seating foundation for your daily activities.
Yes! The Quelsoft Core100 Pro comes with a 5-year limited warranty, giving you added peace of mind and confidence in your purchase.
If your chair experiences a covered quality issue during the warranty period, our customer support team will help you find an appropriate solution. We are committed to product quality and customer satisfaction, so you can enjoy your chair with greater confidence.
Please contact our customer support team as soon as possible and provide your order number along with photos of the missing or damaged parts. We'll review the issue and help arrange an appropriate solution so you can get your chair ready to use as quickly as possible.
We're always happy to help! If you have questions about assembly, product adjustments, replacement parts, warranty coverage, or your order, please reach out to our customer support team.
You can email us directly at support@quelsoftoffice.com. Our team is committed to providing friendly and reliable assistance throughout your ownership experience.
Discover how our community brings Quelsoft to life. Explore real setups, everyday comfort, and workspace inspiration shared by creators and customers across social media.
Customers praised this ergonomic chair's extensive adjustability, including seat height, armrests, lumbar support, and recline features. The breathable mesh design and sturdy construction received consistent positive feedback. Shoppers found it "comfortable for long hours" and "well made." One concern: headrest installation was challenging.
First impressions of the Quelsoft ergonomic chair.
Assembly was pretty straightforward and the instructions were easy to follow. Once together, the chair is comfortable and has a ton of adjustability, which I really like.
My biggest complaint so far is the headrest. I had a harder time with the installation method than I expected, and I’d like the connection to feel a little more sturdy.
I posted my review here with a video for further info. https://www.instagram.com/p/Dd7rUJEEaVg/?utm_source=ig_web_copy_link&stkn=MzRlODBiNWFlZA==
Overall though, really solid first impressions and I’m looking forward to spending more time in it.
I bought this chair for my new shop that’s getting ready to open. I tried it out after setting everything up, and it feels really comfortable and supportive. Since I’ll be spending most of the day sitting at the shop, having a comfortable chair is pretty important to me.
The seat feels good, the back provides nice support, and I can adjust it to fit the way I like to sit. So far, I’m very happy with it and think it’ll be a great fit for long days at work.
The recline is probably my favorite feature on this chair. It feels stable when leaning back and makes it easy to switch positions throughout the day. I work at my desk for long periods, so being able to recline for a short break has been really nice.
The mesh back is breathable and comfortable, and I like how many parts of the chair can be adjusted. The armrests, headrest, lumbar support, seat height, and seat depth can all be customized to fit my sitting position. The chair also feels sturdy and well built.
Overall, it’s a comfortable and versatile office chair with plenty of adjustments, and the reclining function makes it even better for long days at my desk.
This chair feels substantial and well made from the moment you put it together. The frame and base feel sturdy, and the overall construction gives me confidence that it can handle everyday use. Assembly took a little time, but the instructions were clear and everything fit together properly.
Once assembled, the chair is very comfortable. I can easily adjust the height, armrests, recline, and other settings to match my desk setup. The backrest provides good support, and leaning back feels smooth and stable.
I’ve been very happy with the overall quality and comfort. It feels like a solid upgrade from my previous office chair and looks great in my workspace as well.
I’m impressed by how many ways this chair can be adjusted. Beyond the usual seat height, I can move the armrests up and down, forward and backward, and adjust their angle to better match my desk setup.
The lumbar support is also adjustable, which makes it easier to find a comfortable position for my lower back. I especially like the reclining backrest and being able to lock it at different angles when I want to change positions or relax.
Assembly was straightforward, and the chair feels sturdy once everything is put together. Overall, the range of adjustments makes it easy to customize, and it has been comfortable for everyday work at my desk.
I’ve been really impressed with this chair so far. Everything arrived well packaged and clearly organized, which made assembly much easier than I expected. It took me around half an hour to get everything set up.
Once assembled, the chair feels sturdy and well made. The seat and mesh back are comfortable, and there are plenty of adjustments to help find the right sitting position. The lumbar support has been especially helpful during longer periods at my desk, and I also like being able to adjust the armrests, headrest, and recline.
The materials feel durable and the overall finish looks better than I expected. Between the comfort, adjustability, and solid construction, I’m very satisfied with the chair and would recommend it for a home office or everyday workspace.
I replaced my old desk chair with this one and noticed the difference right away. The seat feels comfortable and supportive, and the chair has a much more solid feel than the one I was using before.
The lumbar support is one of my favorite features, especially when I’m sitting at my desk for several hours. I also like being able to adjust the headrest and armrests to better fit my sitting position. The mesh back feels breathable, and the overall design looks clean and modern.
So far, I’m very happy with the upgrade. It feels comfortable, well built, and like a chair I’ll be able to use for a long time.
Everything arrived securely packed, and assembly was simple thanks to the clearly organized hardware and instructions. Once assembled, the chair felt sturdy and comfortable right away.
What I like most is how easy it is to adjust. The seat height, recline, armrests, and lumbar support can all be customized to find a comfortable position. The armrests can move in several directions, which is especially useful when switching between typing and relaxing. The mesh back also keeps the chair breathable during longer work sessions.
Overall, it’s a well-designed office chair with plenty of useful adjustments. It looks clean, feels supportive, and has been a great addition to my home office.
I’ve been using this chair regularly at my desk and it has worked well for what I need. The chair feels stable, the mesh back is breathable, and the reclining function is smooth when I want to lean back and relax. I also like the black finish—it looks clean and fits nicely with my workspace.
The different adjustments make it easy to find a comfortable sitting position, especially during longer work sessions. It feels sturdy without being overly bulky or heavy. Overall, it’s a practical and comfortable office chair for everyday use, and I’m satisfied with the quality.
I’ve been using this chair for about a month now and I’m very happy with it. I spend a lot of time at my desk, both working and gaming after work, and it has stayed comfortable even during longer sessions.
The backrest provides good support, the mesh keeps it breathable, and the different adjustments make it easy to find a comfortable sitting position. I also like the recline when I want to relax for a while. Overall, it has been a great addition to my setup and I’m very satisfied with my purchase.
I went with the full-mesh version, and I’m really impressed with the overall quality. The materials feel premium, and the mesh design keeps the chair comfortable and breathable.
The headrest provides nice support when I lean back, which makes a big difference when I want to relax or take a short break during the day. I also really like that the footrest uses mesh as well—it feels like they didn’t cut corners on the materials.
Overall, it feels comfortable, well made, and thoughtfully designed. I’m very happy with it.
After assembling and using the chair, I’m really satisfied with it. The chair feels sturdy, well-made, and also looks great. The V-shaped back design is unique and modern, while the mesh backrest provides excellent breathability.
The lumbar support is noticeable and helps maintain a more comfortable sitting position during long hours at the desk. The adjustable armrests are also very useful, and the seat is spacious and comfortable.
Assembly wasn’t complicated, and once put together, the chair immediately feels stable and high-quality. The wheels roll smoothly, and the various adjustments make it easy to customize the chair to suit your preferred working position.
So far, my experience has been very positive.
I’ve been using this chair for a few days and have been pleasantly surprised by how comfortable it feels. The seat has plenty of room, and the backrest provides good support without feeling too stiff. I especially like being able to adjust the armrests and seat position to better fit my desk.
The mesh material is breathable and feels nice during longer work sessions. The chair also feels sturdy when reclining or moving around, and the wheels roll smoothly on my floor. Assembly was straightforward and all the parts fit together without any issues.
Overall, it feels like a solid ergonomic chair for the price, especially for everyday home office use.
I’ve been using this chair for my home office and have had a good experience with it so far. The seat is roomy and comfortable, and the mesh back provides nice support while still feeling breathable. I like that I can adjust the lumbar support, armrests, and seat position to find a setup that works well for me.
The chair feels sturdy when sitting or reclining, and the wheels move smoothly around my workspace. Assembly was also easier than expected, with clear instructions and everything fitting together properly. Overall, it’s a comfortable and practical chair that works well for everyday desk use.
