Herman Miller Aeron Compatible – Seat Foam Insert by OLS (Size B and A Chairs)
Herman Miller Aeron Compatible – Seat Foam Insert by OLS (Size B and A Chairs) is backordered and will ship as soon as it is back in stock.
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Description
Description
Seat Foam Insert Replacement for Herman Miller Aeron Chair Size B and A
Restore everyday comfort on your Aeron chair with a seat foam insert made to fit and support for long sitting sessions.
Product Details
| Component | Description |
|---|---|
| Compatibility | Herman Miller Aeron Classic seat pans in sizes B and A |
| Material | Premium density foam for steady support |
| What's Included | One seat foam insert (seat pan not included) |
| Tools Required | None. A flat plastic tool may help if old foam is stuck |
Key Features
| Feature | Benefit |
|---|---|
| Custom Fit | Designed for Aeron seat pan mesh sizes B and A for precise fit |
| Quality Foam | Premium density reduces pressure on back and hips during extended sitting |
| Simple Installation | Quick replacement process with no special tools needed |
| Comfort Restored | Brings back the feel of a well supported Aeron seat |
Installation Steps
| Step | Action |
|---|---|
| 1 | Remove the chair from use and place it on a stable surface |
| 2 | Lift the seat pan mesh slightly and take out the worn foam insert |
| 3 | Position the new insert so it follows the original shape and edges |
| 4 | Press the seat mesh back into place and check that the insert sits flat with no folds |
Tip: If the old insert is sticky, use a plastic card or trim tool to lift it without damaging the mesh.
Chair Size Identification
Aeron chairs have size dots on the upper back frame lip. Check your chair size before ordering:
| Size | Dots | Compatibility |
|---|---|---|
| Size A | One dot | ✓ Compatible |
| Size B | Two dots | ✓ Compatible |
| Size C | Three dots | ✗ Not compatible |
Upgrade your Aeron chair with a fresh seat foam insert and get back to steady, supported sitting.
For more information on how to replace the seat foam and know the exact Aeron chair size that you have, please scroll down.
Installation and Size Guides
Installation Guide
Watch this quick guide to see how to remove the old foam and install your new seat insert correctly. The process takes just a few minutes.
How to Check Your Chair Size
Learn how to identify your Aeron chair size by checking the size dots on the upper back frame. This ensures you order the correct foam insert.
Restore Your Aeron Comfort
Bring back the supported feel of your Herman Miller Aeron chair with a premium density seat foam insert. Designed specifically for sizes B and A, this replacement restores the comfort and pressure relief your chair provided when it was new.
Simple installation takes just minutes with no special tools required. The custom fit follows the original Aeron contour for consistent posture support during long work sessions.


