What does PostureFit SL add?

It is a lumbar pad that supports the base of the spine and encourages an upright pelvis. It replaces the older single-pad PostureFit on this model.

Size B is the middle of the Aeron's three sizes, aimed at medium to large users. The seat is 17 inches deep and the chair holds up to 159 kg.

How is it different from the Aeron Classic?

This version uses the 8Z Pellicle mesh with eight zones and the PostureFit SL back support. The original Classic had a simpler mesh and lumbar pad.

Does the mesh seat stay cool?

Yes. The suspension mesh lets air pass through the seat and back, which owners notice most in warm rooms and long sessions.

What adjustments does it have?

Seat height, arm height, tilt tension, a tilt limiter and forward tilt. Seat depth is fixed at 17 inches.

Is it hard to assemble?

It ships largely assembled, so setup is mostly attaching the casters and setting the adjustments.

Where is the Herman Miller Aeron Size B with Posturefit cheapest?

At Grandeur99, for $600.00, 45% under what the other stores charge, as of our latest check.

Where can I buy the Herman Miller Aeron Size B with Posturefit?

11 stores we checked sell it, including SPC Office Furniture, Grandeur99, Buy Mart03, Go Mart02, Easy Mart10.

Herman Miller Aeron Size B with Posturefit

Best price now

$600.00at Grandeur99Checked 2 h ago

45% under what the other stores charge

Compared across 11 stores. Prices are checked against each store and labelled with when.

Visit Grandeur99

What reviewers say

Owners and reviewers treat the Aeron as a benchmark ergonomic chair, praising its breathable mesh and back support over long days. Common complaints are its weight, the firm seat edge and the need to get the right size.

What people mention

BreathabilityPraisedThe Pellicle mesh keeps sitters cool during long hours at the desk.
Lower-back supportPraisedPostureFit SL is credited with holding the lower back in a comfortable curve.
WeightCriticisedAt 18.1 kg it is heavy and awkward to move around.
Seat comfortMixedSome find the mesh seat supportive, others find the front edge firm.
Fit and sizingMixedSize B suits many, but buyers are warned to check the fit carefully.

About the Herman Miller Aeron Size B with Posturefit

The Herman Miller Aeron Size B with Posturefit is an ergonomic office chair designed by Don Chadwick and Bill Stumpf. It is sized for medium to large users. The seat and backrest use Pellicle mesh suspension, which is breathable and spreads weight evenly to reduce pressure points.

Adjustable PostureFit SL support stabilizes the lower back and encourages healthy spinal alignment. The chair has adjustable height, tilt tension and arms. It tilts backward and forward.

Size

B, for medium to large users

Material

8Z Pellicle Suspension with 8 latitudinal zones

Lumbar support

Adjustable PostureFit SL

Tilt

Harmonic 2 Tilt, tilt limiter and forward tilt

Adjustments

Height, tilt tension, arms, lumbar support

Height

36.75–41.13 in