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OM5 Series Work

Office Master Smart Seating
$668.00 $434.20 (You save $233.80)
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Ships in 5-7 Business Days

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The OM5 features patent-pending “body-activated motion” that automatically adjusts to the user. A collaboration between talented designer Francisco Romero of Phidesign and the engineering team at Office Master, it is intuitive, useradaptive, and uniquely suited for today’s flexible working environments. Advanced ergonomics, finely tailored styling, and attention to comfort – all found in the truly innovative, yet attractively priced OM5 SeriesTM. Available in Modern Black frame (standard armless, with an unupholstered PolyFlex back, and multi-surface soft casters). 12 Year Limited Warranty. Ships Free in 5-7 Days.

  • Poly Flex Back provides firm or soft support as needed
  • Body-Activated Motion
  • Virtual Pause/Lock
  • Variable Back Resistance - rollers in the seat and back respond with more or less resistance to recline
  • Front Edge Waterfall Flex - adjusts to each user’s thigh length and range of motion needs
  • Standard Armless - see options below for choices
  • PolyFlex back comes in 3 colors - see below
  • See below for arm and base options
  • 300 lbs. user weight capacity


  • Overall Width 27"
  • Overall Height 37-42"
  • Back 18"W x 21"H
  • Seat 19.75"W x 17-18.5"D 
  • Seat Height 16-21"

Frame Color: Modern Black

PolyFlex Back Color Options: Modern Black, Palladium Grey, Arctic White



See Fabric Selector for Seat Options

Arm Options: 

  • Height adjustable T-arms 
  • Height adjustable T-arms with smooth fore-aft, side-to-side, and pivoting motion armpads

htadjt.jpg  smoothaft.jpg

Base Accent Option: Standard Black or Polished Aluminum

black-nylon-xt.jpg  polished-al-xt.jpg

Standard Multi-surface Soft Casters



Download the OM5 Series Brochure

Download the GreenGuard Certificate







Office Master offers the following warranties to the original user.

12 Year Limited warranty unless otherwise specified, all models not classified as 'budget' or 24/7 or heavy duty.

7 Year Limited Warranty unless otherwise specified, all models classified as budget or 24/ 7 or heavy duty.

Fabrics and foams are covered by a period of 5 years.

All models are equipped to handle sitters up to 250 pounds unless noted otherwise.

Warranty does not cover labor.

To start a claim contact us at 888-355-4999 for products bought directly from us or Office Master at 877-776-5678

  • Inescapable Comfort - OM5 Chair (Office Master)
    Inescapable Comfort - OM5 Chair (Office Master)
    The OM5 is the best chair in the world! #1 Comfort and Ergono...

The OM5 is the best chair in the world! #1 Comfort and Ergonomics The story behind it's creation: "Office Master challenged up-and-coming designer Francisco Romero of Phidesign to innovate a wholly new chair starting quite literally from nothing. The OM5 Series is the result of that call to action. By stripping away all restrictions on this talented designer, Office Master worked closely with Phidesign for nearly 2 years to bring this sophisticatedly simple chair to life." We've tried the OM5 at Neymarc Visuals....and we love it. Video Production by Neymarc Visuals, LLC Music Licensed (Audio Network)

  • OM5 Series Work with Black Base and Arctic White Poly Flex Back

    OM5 Series Work

    $668.00 $434.20

    The OM5 features patent-pending “body-activated motion” that automatically adjusts to the user. A co...