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Product information
Designed in Germany Studio 7.5, Berlin
Original HM Build Quality Made in USA
Rebuilt in Melbourne Custom refurbished and assembled
Why the Mirra 1 Continues to Stand Out
There are many ergonomic chairs and many well-built chairs. Very few are genuinely recognised for excelling at both.
The Mirra 1 combines extensive ergonomic adjustment with the substantial character of an original commercial-grade Herman Miller platform. Its flexible polymer back, adjustable lumbar system, suspension seat and Harmonic Tilt mechanism work together to support movement rather than forcing the user into one fixed position.
Chairhub’s restoration experience has also highlighted the practical value of the original steel under-seat structure, suitable metal-base configurations and the ability to service, restore or replace individual wear components.
Four-Way Lumbar Adjustment
Vertical positioning, depth or pressure adjustment and separate left- and right-side control allow the user to fine-tune the lower-back support profile.
Harmonic Tilt
Adjustable tilt resistance supports smooth, controlled recline. Where fitted, tilt-limiter and forward-tilt functions support different working positions.
Flexible Performance Back
The contoured polymer back uses geometry and controlled flexibility to provide structured support without relying on excessive cushioning.
Breathable Suspension Seat
The suspension seat promotes airflow, while the adjustable FlexFront edge helps support the thighs without unnecessary pressure behind the knees.
Substantial Original Structure
Chairhub’s USA-made Mirra Classic stock features substantial steel under-seat bracketry and suitable cast-alloy five-star bases.
Serviceable by Design
Individual wear components can be assessed, serviced, restored or replaced without automatically discarding the complete chair.
Comfort Through Precision, Not Excessive Padding
One of the Mirra 1’s most distinctive characteristics is its flexible polymer performance back. It does not require a thick foam cushion or conventional fabric-covered backrest to create structured support.
Comfort comes from the panel’s geometry, controlled material flexibility and the adjustability of the lumbar system.
Ergonomic Accuracy
Not comfort through excessive softness. Comfort through a backrest designed to support the user accurately while allowing natural seated movement.
Not comfort through excessive softness. Comfort through a backrest designed to support the user accurately while allowing natural seated movement.
Advanced Lumbar Support
- Vertical lumbar-position adjustment
- Depth or pressure adjustment
- Left-side pressure control
- Right-side pressure control
- Even or independently adjusted support
Harmonic Tilt
The original Mirra uses Herman Miller’s Harmonic Tilt system with adjustable resistance.
In Chairhub’s servicing experience, a correctly maintained Mirra 1 mechanism can provide exceptionally smooth, controlled and quiet movement between upright and reclined positions.
Key Highlights
- Authentic Herman Miller commercial-grade seating platform
- Designed by Studio 7.5 in Berlin
- Highly adjustable lumbar-support system
- Harmonic Tilt with adjustable resistance
- Flexible polymer performance back
- Breathable suspension seat
- Adjustable FlexFront seat edge
- Steel under-seat architecture in Chairhub’s identified USA-made stock
- Suitable original cast-alloy five-star bases
- Extensive servicing and custom-refurbishment potential
- Locally supported by Chairhub in Melbourne
Mirra 1 and Mirra 2: Different Design Priorities
Herman Miller and Studio 7.5 redesigned the original Mirra to use less material while retaining the design’s athletic attitude and intuitive adjustment philosophy. Herman Miller states that Mirra 2 became approximately 30 percent lighter than the original.
Why Consider Mirra 1?
- More substantial original Herman Miller design and construction
- Generous larger seating platform
- Steel under-seat structure
- Metal-base configurations
- Stronger restoration and servicing potential
- Classic Herman Miller 'built to last' concept is noticeable in final build
Why Consider Mirra 2?
- Approximately 30 percent lighter
- Reduced material usage
- Available with applicable manufacturer warranty when purchased as new.
The Chairhub Custom Rebuild
This is not simply a pre-owned chair that has been cleaned and resold. Each rebuilt Mirra Classic is individually inspected and assembled using the balance of original, professionally restored and new components stated in its product specification.
Original Structure Restored
- Original Herman Miller frame where identified and suitable
- Original steel under-seat structure
- Original cast-alloy five-star base
- Mechanical inspection and realignment
- Fastener inspection and tightening
- Cleaning and servicing of moving components
- Local powder coating where specified
New and Refurbished Components
- Custom poweder-coated and overbaked five star metal legs
- Seat New premium seat-foam system
- New pneumatic-height adjusting cylinder where specified
- Back, spine and lumbar-system inspection
- New or restored arm system as selected and specified
- New upgraded premium silent castors optional
- Most components can be upgraded as an option.
- Final functionality and adjustment testing
Customisation Options
Built around the user, not an imaginary average person.
- Custom powder-coat colours for suitable original metal components
- Selected genuine Herman Miller seat, back and trim combinations where available
- Seat-foam thickness and firmness options on selected builds
- Upgraded quiet-rolling castors suited to the intended flooring
- Extended-height pneumatic systems for taller users
- Heavy-duty cylinder options where compatible and appropriately rated
- Lower-height cylinder options for shorter users
- Alternative compact ergonomic chairs where the Mirra’s proportions are unsuitable
Budget, Value and Upgrade Path
The lowest-cost chair is not always the lowest-cost ownership solution. Ergonomic performance, durability, serviceability, maintenance requirements, replacement frequency and support availability all contribute to long-term value.
Some customers prefer to invest more upfront and complete a comprehensive refurbishment immediately. Others may prefer to address currently worn components and plan additional upgrades later.
Because many Mirra components can be assessed, serviced, restored or replaced independently, Chairhub can help customers compare these approaches and select a refurbishment pathway aligned with their budget, intended usage, presentation requirements and ownership objectives.
Our Objective
To help each customer achieve the best balance between budget, ergonomics, durability, serviceability, sustainability and long-term value.
To help each customer achieve the best balance between budget, ergonomics, durability, serviceability, sustainability and long-term value.
Pneumatic Cylinder Warranty Option
The nominated configuration includes a new pneumatic-height cylinder covered by a Chairhub's height adjustable pneumatic cylinder warranty, subject to the applicable warranty terms, operating conditions and exclusions.
Warranty coverage varies according to the refurbishment package selected and the components included.
Check the individual product or ask one of our staff for clarification.
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