---
product_id: 49609280
title: "Herman Miller Aeron Posturefit Stand Kit Chair, Plastic, Black, Size B (Medium)"
brand: "herman miller"
price: "6297338₫"
currency: VND
in_stock: true
reviews_count: 5
url: https://www.desertcart.vn/products/49609280-herman-miller-aeron-posturefit-stand-kit-chair-plastic-black-size
store_origin: VN
region: Vietnam
---

# Sacral spine support Universal Aeron compatibility Adjustable tension knob Herman Miller Aeron Posturefit Stand Kit Chair, Plastic, Black, Size B (Medium)

**Brand:** herman miller
**Price:** 6297338₫
**Availability:** ✅ In Stock

## Summary

> 🖤 Elevate your Aeron, elevate your day—posture perfected, pain rejected.

## Quick Answers

- **What is this?** Herman Miller Aeron Posturefit Stand Kit Chair, Plastic, Black, Size B (Medium) by herman miller
- **How much does it cost?** 6297338₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/49609280-herman-miller-aeron-posturefit-stand-kit-chair-plastic-black-size)

## Best For

- herman miller enthusiasts

## Why This Product

- Trusted herman miller brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Customizable Comfort:** Easily adjust tension with a sleek knob—fine-tune your support without hassle.
- • **Pain-Free Productivity:** Maintain proper spine alignment to reduce lower back pain during long work sessions.
- • **Effortless Installation:** Install in under 10 minutes with just a Philips screwdriver—upgrade your chair, no sweat.
- • **Ergonomic Sacral Support:** Targets the base of your spine for natural pelvic tilt and posture perfection.
- • **Seamless Aeron Integration:** Designed to fit all Aeron sizes (A, B, C) with recline limiter—like it came from the factory.

## Overview

The Herman Miller Aeron Posturefit Stand Kit is a precision-engineered lumbar support accessory that enhances your Aeron chair by stabilizing the sacral area and promoting natural pelvic tilt. Compatible with all Aeron sizes featuring a recline limiter, it offers adjustable tension for personalized comfort and helps eliminate lower back pain by maintaining optimal spinal alignment. Easy to install and crafted with durable plastic and stainless steel, this kit transforms your seating experience into a health-conscious productivity boost.

## Description

Product Description Supports your back at the base of the spine, or sacral area, helping your pelvis maintain a natural forward tilt to prevent sagging. Posturefit keeps your spine in proper alignment to help eliminate lower back pain. The Aeron posturefit support kit is recommended for people who sit upright in their chair, to perform tasks. Compatible with all sizes (A, B, or C) of Aeron chair and Aeron stools, if the chair has a recline limiter. To find out if your Aeron has a tilt limiter, reach out your left hand while sitting in the chair; if you find one or two levers attached to the recline mechanism of the chair, your Aeron has a tilt limiter. To find the size of an Aeron chair, look for the raised points under the top edge of the back of the frame. One dot means size S, two points in line means size M, three dots in triangle means size L. Care instructions: To clean plastic surfaces, wash with a soft cloth soaked in mild detergent and warm water. Rinse well and dry with a soft cloth. Do not use solvents or abrasive kitchen cleaners. Safety Warning Always ensure the tilt limiter is engaged when using the chair to prevent unexpected reclining. Do not use the chair if the tilt limiter is damaged or missing.

Review: This supports the back from the base of the spine, and doesn't feel as extreme as the lumbar support. That said, it does provide all the support needed and it is a nice adjustable upgrade for the Aeron. The previous "old" lumbar support only has two support settings, and to select between a little support and a lot, it requires removing the support bar from the chair, flipping it over, and reinstalling it. For the PostureFit, the adjustment can be made using a knob for a little support, a lot of support, and everything in between. The pieces fit on the frame in a way where the original designers apparently planned for this type of addition. There's a hidden bump/tab that helps align the bracket for the knob. Initially the bracket was a little tricky to get aligned, but it's because the pieces fit so tightly together. Fits on the Aeron in a way that makes it feel like it came this way from the factory. Despite what the manual says, the PostureFit kit can be installed with a Philips head screwdriver and nothing else. There are YouTube videos for help installing if you get stuck, but I feel that the written instructions are reasonably written and the illustrations are sufficient. The bottom of the support is pulled toward the front of the chair by a cable. This cable is held in place by a bracket, but most importantly, the cable passes straight through the mesh back rest. I do not think it is possible to install it without widening a small hole in the mesh back rest. I was very careful during the install, but there is still a small widened area of mesh where the cable passes through. This means that once you install the kit, even if you remove the kit, there will always be a small hole in the base of the mesh back rest. I double checked the location for mine, and it is so low on the back rest that it is below the seat bottom. This means it is only visible from behind the chair. If this sort of irreversible change bothers you, this kit may not be for you as replacement back rests can be very expensive. If you already have a lumbar support on the chair, I am not sure that this kit is worth the money. In the absence of lumbar support on the chair, this kit is absolutely worth the money.
Review: Okay, so first the pros. This thing is insanely easy to install and takes maybe 10 minutes of modification to be up an running. Kudos for being consumer friendly on that front. My chair is an '07 and it installed with no issue. (P.S. I installed solely with a Philips screwdriver fyi). Second pro is this lumbar support does provide a more even support than the standard Herman Millar lumbar pad and for what it's worth... is an upgrade. HOWEVER, what you should know before buying is that this lumbar support sits VERY low on the back. I'm a fairly short person (5'5") and I would argue this support is a hair too low for me. However, if I keep it on medium support then I don't notice after about 15 minutes of work. I was hesitant to give this 4 stars as I can easily see this being a bigger problem for taller individuals who use size B Herman Miller's. BUT, my lumbar does feel more supported with this than without. So it does do it's job with the caveat of putting up with the sensation of something touching your lower lumbar. Short version-- this sits very low for a lumbar support but Herman Miller Aeron's are better with this support than without? So it's a weird catch 22.

## Features

- Supports your back at the base of the spine, or sacral area, helping your pelvis maintain a natural forward tilt to prevent sagging.
- Keeps your spine in proper alignment to help eliminate lower back pain.
- Solution for healthy posture and brings significant improvement in the lower back when you are sitting.
- Compatible with all sizes (A, B, or C) of Aeron chair and Aeron stools, if the chair has a recline limiter.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000LT6BFS |
| Assembly type | Already Assembled |
| Capacity | Size B |
| Care Instructions | Wipe Clean |
| Colour | Black |
| Customer Reviews | 4.0 4.0 out of 5 stars (149) |
| Date First Available | 17 Aug. 2012 |
| Is assembly required | Yes |
| Item Model Number | AE905BG1 |
| Item model number | AE905BG1 |
| Item shape | Irregular |
| Manufacturer | Herman Miller |
| Mattress comfort | Office Chair |
| Primary material | Stainless Steel |
| Shipping weight | 0.59 Kilograms |
| Style | Contemporary |
| Top material | Plastic |
| Type of wood | Stainless Steel |
| What is in the box? | Arm Pad |

## Product Details

- **Brand:** Herman Miller
- **Colour:** Black
- **Item weight:** 590 g
- **Material:** Stainless Steel
- **Size:** Size B

## Images

![Herman Miller Aeron Posturefit Stand Kit Chair, Plastic, Black, Size B (Medium) - Image 1](https://m.media-amazon.com/images/I/314DzsxhP3L.jpg)
![Herman Miller Aeron Posturefit Stand Kit Chair, Plastic, Black, Size B (Medium) - Image 2](https://m.media-amazon.com/images/I/41FYM6oXkCL.jpg)
![Herman Miller Aeron Posturefit Stand Kit Chair, Plastic, Black, Size B (Medium) - Image 3](https://m.media-amazon.com/images/I/71eQ8RbGCwL.jpg)

## Questions & Answers

**Q: what is the difference in the sizes ? A-C?**
A: They correspond to the size of your chair.  To find out what size your chair is, do this: rotate your chair until you are viewing the back of the chair. Place your hand on the top of the back frame that is shaped like a handle. On the back side of the piece are raised dots indicating which size chair you have. Three dots are used for size C chairs, two dots for size B and one dot for size A. If you need assistance locating the size indicator, please give Herman Miller a call at 888.798.0202.

**Q: Would this purchase just be the kit for the chair?**
A: Yes, this kit comes with the Lumbar Support and associated hardware needed to attach to a Classic Aeron.

**Q: One hundred dollars for this piece of plastic??**
A: This is the entire kit with control knob and rear Posturefit assembly.  BACKSTORE

**Q: Does this work with the newer 2018 Remastered Aeron chair?**
A: it's for all sizes classic Aeron chairs only , not for Remastered Aeron chair ,
Thanks

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***N on 31 July 2019*

This supports the back from the base of the spine, and doesn't feel as extreme as the lumbar support. That said, it does provide all the support needed and it is a nice adjustable upgrade for the Aeron. The previous "old" lumbar support only has two support settings, and to select between a little support and a lot, it requires removing the support bar from the chair, flipping it over, and reinstalling it. For the PostureFit, the adjustment can be made using a knob for a little support, a lot of support, and everything in between. The pieces fit on the frame in a way where the original designers apparently planned for this type of addition. There's a hidden bump/tab that helps align the bracket for the knob. Initially the bracket was a little tricky to get aligned, but it's because the pieces fit so tightly together. Fits on the Aeron in a way that makes it feel like it came this way from the factory. Despite what the manual says, the PostureFit kit can be installed with a Philips head screwdriver and nothing else. There are YouTube videos for help installing if you get stuck, but I feel that the written instructions are reasonably written and the illustrations are sufficient. The bottom of the support is pulled toward the front of the chair by a cable. This cable is held in place by a bracket, but most importantly, the cable passes straight through the mesh back rest. I do not think it is possible to install it without widening a small hole in the mesh back rest. I was very careful during the install, but there is still a small widened area of mesh where the cable passes through. This means that once you install the kit, even if you remove the kit, there will always be a small hole in the base of the mesh back rest. I double checked the location for mine, and it is so low on the back rest that it is below the seat bottom. This means it is only visible from behind the chair. If this sort of irreversible change bothers you, this kit may not be for you as replacement back rests can be very expensive. If you already have a lumbar support on the chair, I am not sure that this kit is worth the money. In the absence of lumbar support on the chair, this kit is absolutely worth the money.

### ⭐⭐⭐⭐ Review
*by M***Y on 25 July 2022*

Okay, so first the pros. This thing is insanely easy to install and takes maybe 10 minutes of modification to be up an running. Kudos for being consumer friendly on that front. My chair is an '07 and it installed with no issue. (P.S. I installed solely with a Philips screwdriver fyi). Second pro is this lumbar support does provide a more even support than the standard Herman Millar lumbar pad and for what it's worth... is an upgrade. HOWEVER, what you should know before buying is that this lumbar support sits VERY low on the back. I'm a fairly short person (5'5") and I would argue this support is a hair too low for me. However, if I keep it on medium support then I don't notice after about 15 minutes of work. I was hesitant to give this 4 stars as I can easily see this being a bigger problem for taller individuals who use size B Herman Miller's. BUT, my lumbar does feel more supported with this than without. So it does do it's job with the caveat of putting up with the sensation of something touching your lower lumbar. Short version-- this sits very low for a lumbar support but Herman Miller Aeron's are better with this support than without? So it's a weird catch 22.

### ⭐⭐⭐⭐⭐ Review
*by T***M on 30 December 2011*

I bought my first Aeron chair three months ago. Since it was paid for by my employer, I splurged and chose the posturefit option. The chair was great-- so great that a few weeks later I decided to order one for my home office. Herman Miller was having a sale, and I selected a fully loaded Aeron--but this time without posturefit, as I'd read reviews here that said the lumbar pad offered even better back support. In hindsight, foregoing posturefit on my second Aeron was a stupid decision, because (a) posturefit had worked well for me in the past and (b) the lumbar pad was just a solid block of rubber that was bound to be uncomfortable. And it was. The lumbar pad rendered the chair almost useless to me. So, I sucked it up, ordered the posturefit unit, and installed it myself. The installation is not trivially easy, but requires no special skills (only patience). As others have noted, forcing a wire through the mesh in the seat back feels wrong, but it's no big deal. Still, I wish I had just ordered the thing with posturefit to begin with. I would have saved 70 bucks. In the meantime, anybody want to buy a mint condition lumbar pad? :-)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-13*