Herman Miller Aeron Office Chair Size B (Medium) Mineral - Fast Delivery
Experience iconic ergonomic design with the Herman Miller Aeron Chair Size B (Medium) in the stylish Mineralfinish, available now for fast delivery in just 3–5 working days.
Perfectly suited for users between 5'4" (167 cm) and 6'1" (183 cm), this fully-specified Aeron model includes all premium adjustable features to deliver personalised comfort and support throughout the working day.
Breathable 8-Zone Mesh for All-Day Comfort
The Aeron’s innovative Pellicle mesh seat and back allow air, body heat and moisture to flow freely, helping regulate your temperature and prevent discomfort. With eight latitudinal zones of varying tension, the chair provides responsive ergonomic support exactly where your body needs it most.
Enhanced PostureFit SL Back Support
This in-stock model includes PostureFit SL as standard. Dual flexible pads support both the lumbar spine and sacrum, promoting healthy posture and reducing strain during long periods of sitting.
Why Choose the Aeron Size B in Mineral?
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Best-selling size suitable for the majority of users
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Premium Mineral colourway for a clean, modern aesthetic
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Fully adjustable ergonomic features included as standard
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Delivered quickly so you can upgrade your workspace without delay
Upgrade your home office or workplace with the world’s leading ergonomic chair—Herman Miller Aeron Size B in Mineral, ready for fast delivery.
Key Features
- Mineral colour mesh back and seat
- Satin Mineral metal colour base and frame
- Height adjustable seat (427-579 mm)
- Fully adjustable (height, depth, width), pivoting arms
- PostureFit SL lumbar support
- Tilt limiter & forward tilt
- Choice of armpads
- Choice of carpet or multi-floor castors
Wellworking Says...
"The Aeron chair in the lighter Mineral colour, in stock for fast, free delivery. Great in the office or a domestic environment for home workers."

Herman Miller Aeron chair FAQs
How you just the seat height?
To adjust the seat height:
- Raising the Seat: While not seated, lift the paddle-shaped lever on the right side upward.
- Lowering the Seat: While seated, lift the same lever upward.
Adjust the seat height so your feet rest flat on the floor or on a footrest.
How can I modify the recline tension?
The recline tension determines the resistance when leaning back:
- Increase Tension: Turn the knob on the right side of the chair forward (clockwise).
- Decrease Tension: Turn the knob backward (counterclockwise).
Adjust the tension to your personal preference.
What sizes are available for the Aeron chair, and how do I choose the right one?
The Aeron chair comes in three sizes:
- Size A (Small): Recommended for individuals 4’10”–5’4” tall
- Size B (Medium): Suitable for those 5’2”–6’ tall
- Size C (Large): Designed for individuals over 6’ tall
How do I adjust the lumbar support?
The Aeron chair features adjustable Posturfit SL lumbar support:
- Depth Adjustment: The pads can be pushed forward or backwards with the wheels at the back of the chair.
Where can I purchase replacement parts?
Some replacement parts, such as castors, arm pads, and back support options, are available through from Wellworking. Please contact us for pricing.
What is the warranty on the Aeron chair?
Herman Miller offers a 12-year warranty covering parts and labour for the Aeron chair, applicable when purchased from an authorised retailer, such as Wellworking.
How do I clean and maintain the Aeron chair?
To clean the chair:
- Pellicle Mesh: Use a vacuum cleaner to remove dust. For stains, apply a solution of mild soap and warm water with a soft cloth, then rinse and dry.
- Frame and Base: Wipe with a soft cloth dampened with mild detergent and warm water. Dry thoroughly.Is assembly required for the Aeron chair?
The Aeron chair comes fully assembled, unless requested in knock down form.
How much are Herman Miller chairs?
Herman Miller Aeron chairs start at around £1000 depending on specification required.
Where can I try Herman Miller Aeron chairs?
You are welcome to try Herman Miller chairs at any of our offices in London, Pershore or Galashiels, to book an showroom appointment contact us.
What colours does the Aeron chair come in?
Aeron comes in Graphite (dark grey), Onyx (black), Carbon (mid grey) and Mineral (light grey).
WARRANTY CLAIMS
All warranties are automatically applied by Wellworking and there is no need to register your product with the manufacturer.
Please keep your proof of purchase safe (it's easier for us to locate your order with the invoice or web order number) and, in the unlikely event a fault occurs, contact us by emailing service@wellworking.co.uk and we will arrange a service visit or replacement.
As a certified B Corp we are committed to putting sustainability at the core of all the products and services we offer.
Our products are designed with quality and longevity in mind and this is reflected in their long warranties.
We are working with our suppliers to reduce packaging and limit the use of non-recyclable packing materials. We take away all the packaging when we deliver products and recycle as much as we can within our offices to reduce the waste that goes to landfill.
This product has been awarded the Wellworking Greener Choice badge which means it has met our strict sustainability criteria. Find out more about Greener Choice here.