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Herman Miller

Herman Miller Aeron Drafting Stool Size C with After Market Drafting Ring

FairLimited data
  • Adjustable lumbar
  • Synchro or weight-activated tilt

$849.00

In stock on Amazon.com

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Specs verified August 2026

Amazon.com data updated October 13, 2026, 2:34 pm ET. Price and availability are accurate as of the time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply.

Ergo Score Breakdown

Ergo Score: 31/100

Adjustability 19/40

Armrests3/101D armrests: 3/10
Seat height4/6adjustable: 4/6
Seat depth0/5Not listed by the seller
Lumbar adjustment5/7lumbar adjustments: 5/7
Recline0/2Not listed by the seller
Tilt lock0/3tilt without stated lock: 0/3
Tilt tension3/3tilt tension: 3/3
Advanced tilt4/4Kinemat Knee-Tilt Mechanism: 4/4

Support 12/30

Lumbar support12/12lumbar support: 12/12
Upper back support0/4Not listed by the seller
Headrest adjustment0/2Not listed by the seller
Cushion0/5Not listed by the seller
Seat edge0/3Not listed by the seller
Breathable back0/4Not listed by the seller

Build 0/30

Warranty0/9Not listed by the seller
Weight capacity0/6Not listed by the seller
Certifications0/5Not listed by the seller
Base0/3Not listed by the seller
Gas lift0/2Not listed by the seller
Owner rating0/5Not listed by the seller

Comfort Index

Comfort Index: 10/100

Seat cushionNot listed by the seller
Cushion thicknessNot listed by the seller
ReclineNot listed by the seller
Breathable backNot listed by the seller
HeadrestNot listed by the seller
Armrests10/10
Owner rating0/25

Specifications

Seat height rangeNot listed by the seller
Seat widthNot listed by the seller
Seat depthNot listed by the seller
Seat depth adjustableNot listed by the seller
Seat cushionNot listed by the seller
Cushion thicknessNot listed by the seller
Back materialNot listed by the seller
Backrest heightNot listed by the seller
Backrest widthNot listed by the seller
Armrests1D (height only)
Lumbar supportYes
Lumbar adjustmentsHeight, tension
HeadrestNot listed by the seller
Max reclineNot listed by the seller
Tilt mechanismKinemat Knee-Tilt Mechanism
Base materialNot listed by the seller
CastersNot listed by the seller
Gas liftNot listed by the seller
Weight capacityNot listed by the seller
Chair weightNot listed by the seller
Overall heightNot listed by the seller
WarrantyNot listed by the seller
CertificationsNot listed by the seller
Drafting stoolAdjustable lumbarKnee tiltTilt tension controlHeight-adjustable arms

What We Like

  • Lumbar height and tension both adjust, and the stool leads the drafting category on the adjustability sub-score of the Ergo Score.
  • A Kinemat knee-tilt mechanism is named, and its tension can be adjusted.

Watch Out For

  • Its 11 reviews average 3.3, the lowest rating of any drafting chair.
  • The Comfort Index of 10 is the lowest in the drafting category, since cushion, thickness, recline, breathability, headrest and owner rating all contribute zero.
  • It shares the lowest Build sub-score in the category, 0, because the warranty, weight capacity, certifications, owner rating, base and gas lift lines all score zero.

At a Glance

A Size C Aeron drafting stool with an after-market drafting ring, offering an adjustable lumbar; the listing states few specs.

Who This Chair Is For

  • Drafting-desk users who want a stool built around an Aeron.
  • Buyers who want a Size C Aeron rather than a standard Aeron chair.

Who Should Look Elsewhere

  • Buyers who want a weight rating on the page, since the listing does not state one.
  • Shoppers who want every part original to the maker, since the title describes the drafting ring as after market.

Kinemat knee tilt and a pneumatic lift: the Size C stool

The tilt is a Kinemat knee-tilt with a tension setting. A pneumatic height adjustment is named, with no seat height range given, and the listing does not state a recline angle, lock positions or a seat depth adjustment.

Alternatives to Consider

Frequently Asked Questions

Does the Aeron drafting stool have arms?

Arms are present and adjust in height; the listing says nothing more about them.

Does the stool list a base material?

For the stool, a base material is not stated in the listing.

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Amazon.com data updated October 13, 2026, 2:34 pm ET. Price and availability are accurate as of the time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply.