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Herman Miller Aeron Size B Chair, PostureFit SL, Graphite

Herman Miller

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A graphite Aeron Size B with breathable 8Z Pellicle suspension, adjustable PostureFit SL support, a tilt limiter and seat-angle control. Adjustable arms and hard-floor casters complete this configuration for a carefully fitted desk setup.

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Product details

Brand
Herman Miller
Color / finish
Graphite frame, base and suspension
Product type
Size B ergonomic task chair

Description

The Aeron supports your weight on tensioned suspension rather than a thick foam cushion. That open construction lets air pass through the seat and back, while the medium Size B frame gives the chair its defined seating shape. This configuration pairs the Remastered Aeron design with PostureFit SL and controls for both recline and forward seat angle.

Choose it when you want to fine-tune back support and alternate between upright desk work and a supported recline. The two PostureFit SL pads address the lower back and the base of the spine; their pressure is adjustable. The graphite finish keeps the chair visually restrained, with hard-floor casters specified for this listing.

Features

  • 8Z Pellicle suspension: uses zones of differing tension across the seat and back instead of upholstered padding.
  • PostureFit SL: lets you adjust the support pressure against the lower back and sacral region.
  • Tilt limiter: sets how far the chair reclines for your current task.
  • Seat-angle control: adds a forward position for work closer to the desktop.
  • Adjustable arms: let you bring forearm support into a comfortable relationship with your keyboard and mouse.
  • Hard-floor casters: are the wheel configuration listed for this graphite chair.
Herman Miller Aeron Size B Chair, PostureFit SL, Graphite

Specifications

Chair size
B medium
Suspension
8 zones
Seat depth
17 in
Herman Miller Aeron Size B Chair, PostureFit SL, Graphite specifications
Model family Aeron Remastered work chair
Size B / medium
Seat construction 8Z Pellicle suspension; fixed depth
Back support Adjustable PostureFit SL
Tilt package Tilt limiter with seat-angle adjustment
Arm configuration Adjustable arms; black pads
Finish Graphite
Casters Hard-floor type

Check the fit, then tune the support

Aeron sizing is about body proportions as well as height. Sit with your back against the backrest and check that the front rim clears the backs of your knees. The seat does not slide forward or backward, so choosing the right shell size matters more than it does on a chair with adjustable seat depth.

Check the fit, then tune the support
Start with seat height Your feet should rest securely on the floor or a suitable footrest without the seat lifting your thighs.
Set the back support Begin with light PostureFit SL pressure, then increase only until the pads feel supportive.
Match your work posture Use the tilt limiter for your preferred recline range; try the forward seat angle separately.
Check desk clearance Confirm the arms fit under the desk at your chosen working height, including any drawer or keyboard tray.

Common questions

Is this the Classic or Remastered Aeron?

This is the Remastered configuration with 8Z Pellicle and PostureFit SL. Classic Aeron lumbar pads, controls and replacement components should not be assumed interchangeable.

Can I adjust the seat depth?

No. The seat has a fixed front-to-back depth. Check the medium Size B fit with your back supported and space behind your knees; the height control does not change seat depth.

Does PostureFit SL move up and down?

Its user adjustment changes the support pressure. It is a different system from the separate height-adjustable lumbar strap offered on some Aeron configurations.

Is a headrest included?

No headrest is listed or shown for this chair. If a headrest is essential, evaluate an appropriate chair configuration before ordering rather than assuming an accessory is included.

Product information & sources

Configuration follows the supplied product title and gallery. Manufacturer references explain the Remastered platform; owner discussions informed fit questions, not performance claims. Cylinder-specific height ranges and current-production material changes are not assumed for this listing. Herman Miller: Aeron product sheet; Herman Miller: Aeron configurations and dimensions; Herman Miller: Aeron adjustment guide; Owner discussion: Aeron size and seat-rim fit. Reviewed September 2026.

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