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X-Chair vs Aeron (2021): Comparing X-Chair’s X2 K-Sport Management Chair and Herman Miller’s Aeron Chair

Office chairs are a crucial element in the workplace and should be invested in with the long term in mind. Here, we take a look at two ergonomic office chairs that promise to keep you comfortable and help you prevent health problems from long hours of sitting: the X2 K-Sport Management Chair by X-Chair and the Aeron Chair by Herman Miller. We will compare the two to help you decide which one to purchase for yourself.

X-Chair X2 K-Sport Management Chair and Herman Miller Aeron Comparison Chart

ModelX-Chair X2 K-Sport Mgmt ChairHerman Miller Aeron
PriceCheck price at XChair.comCheck price at HermanMiller.com
Max Weight Capacity350 lbs.350 lbs.
Dimensions ( L, W, H)32″ x 26.5″ x 40″27″ x 27″ x 41.25″
Seat Dimensions (L, W)19″-21″ x 19.5″17″ (seat depth only)
Seat MaterialK-Sport advanced performance materialPellicle 8Z®
Adjustments Dynamic Variable Lumbar (DVL) Support
Tilt Tension & Tilt Lock
Backrest Height
Seat Height
Seat Depth
Headrest Height
Headrest Angle
Lumbar Depth
Lumbar Height
Tilt Limiter
Forward Tilt
PostureFit® Adjustment
Tilt Tension
Arm Angle
Arm Height
Seat Height
Seat Height Adjustment Range18″-22.5″16″-20.5″
Armrest Adjustment Up to 3.5” above the seat6.8” above the seat to 10.8”
Backrest Height AdjustmentUp to 2.25” above the seatN/A
Recline Angle40°N/A
Wheel Diameter 2″2.5″
Color Options 44
WarrantyUp to 15 yearsUp to 12 years

Build & Material

Both chairs feature high-quality mesh material with aluminum or plastic bases. The X2 offers a headrest attachment, while the Aeron lacks one.

X-Chair’s K-sport Advanced Performance Material (left), and Herman Miller’s 8Z Pellicle suspension material (right)

Both chairs are well-built and offer good lumbar support, helping to alleviate back pain from long hours of sitting. They differ, however, in their mesh material, technology, color choices, and headrest availability. 

The X2 features K-sport Advanced Performance Material for the headrest, seat, and back This gives a softer, more adaptive feel with a tighter weave to optimize comfort. The armrests are made of plastic and the base is made from heavy-duty polished aluminum. The mesh comes in four different colors: grey, black, red, and white. 

The Aeron Chair features 8Z Pellicle suspension material for the seat and backrest. This creates eight zones of varying tensions for optimal support and breathability. Apart from the mesh, all of the plastic used in the chair is of high quality, and the standard wheels are 2.5” in diameter, larger than the average wheels. The Aeron Chair comes in four different color schemes: Graphite/Polished Aluminum; White/Satin Aluminum; White/Polished Aluminum; Graphite/Graphite. The chair also comes in three different sizes in order to accommodate users from the 1st to the 99th percentile (Dimensions stated in the table above are the Size B – medium specifications).


Both chairs feature their own unique and trademarked technologies.

X-Chair’s Dynamic Variable Lumbar (DVL) Support (left), and Aeron’s PostureFit SL technology (right)

Created specifically for X-Chair, SciFloat Infinite Recline technology helps your body stay in motion throughout the day and can be adjusted to match your specific bodyweight so that movement is effortless. Motion improves concentration, circulation, and energy levels so that you can enjoy boosted productivity and comfort in the workplace. X-Chair’s X2 also features the Dynamic Variable Lumbar (DVL) support that intuitively adjusts itself to your body every time you move. The DVL support responds to your weight, height, position, and the amount of pressure you put on it. The DVL Support pivots with you, keeping you comfortable and supported without ever making an adjustment to your chair even as you change positions throughout the day.

Aeron features their own PostureFit SL technology. This encourages users to sit with their shoulders back, pelvis tilted slightly forward and chest open, which is the ideal sitting position in most conditions. To achieve balance of ergonomics and comfort, the Aeron chair includes adjustable pads that stabilize the base of your spine and provides great lumbar support. Aeron also features a forward tilt, a feature that is quite rare in other ergonomic chairs. This allows for a wider range of positions the user can get into while working.

Ergonomic Adjustments

Both chairs offer a vast array of ergonomic adjustments, however, the X2 has more ergonomic adjustments than the Aeron Chair.

Closeups of the X2 Chair by X-Chair (left), and the Aeron Chair by Herman Miller (right)

The X2 Has a total of 10 ergonomic adjustments: Dynamic Variable Lumbar (DVL) Support; Recline; Tilt Tension; Tilt Lock; Backrest Height; Seat Height; Seat Depth; Headrest Height; Headrest Angle; Armrests. Often, this chair earns perfect marks on chair feature ranks.

The Aeron Chair has 9 ergonomic adjustments: Lumbar Depth; Lumbar Height; Tilt Limiter; Forward Tilt; PostureFit® Adjustment; Tilt Tension; Arm Angle; Arm Height; Seat Height. Aeron does not have some adjustments that most other ergonomic chairs offer, like the seat depth, back height, and arm width (but these are solved by the sizing options).


The X2 is more affordable and versatile, but the Aeron Chair is a more individualized investment.

Both chairs are well-made, breathable, and quite popular among office workers, but they definitely have their differing strengths. The X-Chair X2 K-Sport Management Chair is the ideal chair for settings such as shared workspaces. Given its versatility and wider adjustment options, a single X2 chair can sit more types of people comfortably, than the Herman Miller Aeron Chair. That does not, however, put the Aeron at a disadvantage. It simply means that it is a bit more individualized, as opposed to having a one-size-fits-all function. This means that the Aeron Chair is more tailored to a certain individual, greatly boosting their productivity and long-term comfort. This makes it perfect for a home office or individual workspace.

Both chairs are great on their own and either one will be a great choice. The X2 is more budget-friendly, but the Aeron chair is very much worth the splurge.


📌 Is it worth spending so much on chairs?

Yes, think of it as an investment to you, your comfort, and your health.

📌 Are both of these chairs durable?

Both chairs have excellent durability. X-Chair warrants their products for up to 15 years, while Aeron’s Warranty covers a product for 12 years. These are statements of confidence in the quality of their works.

📌 What are the conditions of the Aeron Chair’s warranty?

Herman Miller’s 12-year warranty covers casters, pneumatic cylinders, tilts, and all moving mechanisms. For more details, you can visit HermanMiller.com.

📌 What are the conditions of the X2’s warranty?

For more details on X-Chair’s 15-year warranty and conditions, you can visit XChair.com.

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Manolo Martinez

Senior Editor at Compare Before Buying. Writer and researcher passionate about music, film, and DIY projects.