Which Mirra size is right for me?

The mirra comes in one size, that is designed to fit at least 95% of the human population.


What are the exact dimension of the Mirra?


What is the difference between upholstered and non-upholstered TriFlex Polymer Back?

The TriFlex™ back is Mirra’s one-piece moulded polymer backrest. It is generous in size to support the users entire back. Pliable and elastic, the TriFlex™ back has geometric shapes and spine construction that create flex zones in the cervical, thoracic, lumbar and sacral regions. This allows the back to automatically adjust to the users size, posture and movements. No manual back-height adjustment is needed. The back also provides aeration.

The upholstered version supplements the polymer backrest with a fabric cover.


Do I need hard floor casters?

If you have parquet, tiles, laminat or any other kind of hard floor, it is urgently recommended to order hard floor casters. You will profit from the following advantages:

+ less abrasion on your floor

+ lower noise when rolling

+ casters have a break which releases when you sit on the chair, no unwanted rolling around


Are there further options to configure my Mirra?

YES. In our online shop you will find only an extract of the possible configurations. You will find all options available in this pdf document:

HM Mirra colour choices


Is there a 12 year guarantee for the mirra?

Herman Miller offers a 12 year warranty for the aeron chair. 5 years on the pellicle AirWeave and 3 years on the gas lift. This guarantee promise is made for a 24/7 usage.


How do I adjust my Mirra?

Find the manual for the mirra as a pdf:

HM Mirra - manual

Alternatively you can watch the following video: