OM Affirm High Back Chair

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OM Affirm High Back Chair Simple
OM Affirm Backrest Overlay Cover
OM Affirm High Back Chair Executive
OM Affirm High Back Chair Executive
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OM Affirm High Back Chair Management
OM Affirm High Back Chair Simple
OM Affirm High Back Chair Simple
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Starting At $489.99 + Free Shipping!

Product ID : OM-AF5X8
Manufacturer: OM Chairs

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The Affirm Series chair has a unique, modern style with a frameless mesh back, waterfall seat, and numerous adjustments. The Affirm high-back chair gives you three flexible options for task, executive and conference environments. Adjustments to seat height, back height, and tilting mechanisms, allow for ultimate comfort customization. This chair brings a contemporary element to any workspace that looks good while working with the way you sit.

Affirm Resources:

*Please note that all OM chairs are made to order and cannot be returned*


  • Overall Width: 27”

  • Overall Height: 41.5-49”

  • Back: 21”w x 24”h

  • Seat Small: 19”w x 17.5-20.6”d

  • Seat Large: 20.75”w x 17.5-20.6”d
  • Standard Seat Height: 17-22”

  • Carton Weight: 58 pounds

  • UPS Weight: 101 pounds

  • Weight Capacity: 300lbs.
  • Warranty: 12 years limited


Build Quality

Build Quality

The manufacture of OM seating is conducted under the highest industry standards with careful attention to detail and individual inspection of each and every unit. This chair was made with a contemporary frameless mesh design and generous waterfall curve for added comfort. The back of the chair is made of modern, sleek, mesh design that fits into any workspace. A pneumatic lift comes with the chair which allows you to change the height level of your seat to better suit your individual preference as determined by your height.



Model Options: 



Arm Cap Options: 

Arm Cap Options


Choose from 3 different arms.

  • KR-25: Fixed width, height adjustable T-arms featuring natural grip control.
  • KR-200: Height & width adjustable, removeable T-arms with natural grip control.
  • KR-445: Height adjustable, removeable T-arms with fore-aft, side-side, and inward pivoting arm top.



Base/Cylinder Height Options: 

Cylinder Options

Base/Cylinder Seat Height Options

  • Standard Height (5" cylinder) = Seat Height: 17"-22"



Caster Options: 

Caster Options

Caster Options

Choose from 4 different caster options:

  • Dual Tone Universal Soft Casters - for wood, tile, and smooth surfaces
  • Rubber Casters For Concrete - designed for hard surfaces
  • Safety Soft Casters - minimize chair movement when NOT in use
  • Reverse Braking Casters - restricted chair movement when chair IS in use


Seat Size Options

Seat Options

Memory Foam Option: 

Memory Foam Options

Headrest Option: 

Headrest Options


Color Swatches


Upholstery Options (click to enlarge)

Basic Grade 1: 100% Marquesa Lana. Rated for 250,000 double rubs.
Basic Black
Basic Blue
Basic Burgundy
Basic Charcoal
Basic Gray
Basic Navy
Celestial Grade 1: 100% Polyester. Rated for 183,000 double rubs.
Celestial Callisto
Celestial Europa
Celestial Hyperion
Celestial Oberon
Celestial Rhea
Celestial Titan
Spice Grade 1: 100% Recycled Polyester. Rated for 400,000 double rubs.
Spice Juniper
Spice Mint
Spice Nutmeg
Spice Paprika
Spice Pepper
Spice Sesame
Type Grade 1: 90% Polyester, 6% Pre-consumer Recycled Polyester, 4% Post-Consumer Recycled Polyester. Rated for 100,000 double rubs.
Type Aqua
Type Electric
Type Fairy
Type Ice
Type Leaf
Type Obsidian
Type Steel

Product Reviews

Warranty and Shipping

All Affirm Series structural components (including gas cylinders, metal and plastic parts) as well as control handles are guaranteed against structural failure for 12-year warranties under normal commercial use and to the first purchaser. 

For all models, consumable items (i.e., casters, glides, etc.) are covered by a 5-year normal commercial use warranty.

FABRICS AND FOAM OM in-stock upholstery & foam cushions are covered by a 5-year normal commercial use warranty. Normal wear and tear on fabrics such as wrinkling, dirt accumulation or gathering is not covered. Natural, minor variations may exist in color, surface, grain or texture of upholstery materials. As a result, any such variations are not warranted. COM/COL and graded-in fabrics are not covered.


Upholstery Options

Upholstery Options

The Affirm chair is available in 4 different Grade 1 fabrics. The Basic fabric is made of 100% marquesa lana and comes in Black, Blue, Burgundy, Charcoal, Gray, and Navy. The Spice fabric is made of 100% recycled polyester and comes in the colors Juniper, Mint, Nutmeg, Paprika, Pepper, and Sesame. The Celestial fabric is made of 100% polyester and comes in the colors Callisto, Europa, Hyperion, Oberon, Rhea, and Titan. The Type fabric is made of 90% polyester, 6% pre-consumer recycled polyester, and 4% post-consumer recycled polyester. Type comes in aqua, electric, fairy, ice, leaf, obsidian, and steel.

Mesh Backrest

This Affirm chair has the high-back backrest that comes in two “frameless” mesh back color options: Nightfall Black and Starlight Silver. The backrest features many adjustments to customize the chair to your liking. Move the backrest height up or down, angle it backwards with the locking tilt adjustments, and adjust the lumbar support. Adjusting the back angle means that you can control the amount of contact that your back makes with the backrest. Doing all of these adjustments will allow your back to receive more, or less, complete support from the backrest.

Mesh Back

Seat Comfort

Seat Comfort

The Affirm offers either a small or large seat size. The thickness and size of the seat allows for all day comfort no matter what your size. The seat was designed with extra waterfall curve and “sit-as-you-like” comfort. Adjust your seat depth and seat height to better fit your comfort needs. The seat on the Affirm provides semi-firm cushion support for those who prefer a seat that won't bottom out.


The comfort of the Affirm is designed to be ergonomic while you’re sitting at your desk. One of the features of the Affirm is the Synchronous Knee tilt that ties your chair’s backrest and seat tilting motion together so that they both move at the same time. Essentially what this feature does, is allow for the soles of your feet to remain relatively flat while you tilt your seat. This is good from an ergonomic standpoint because the more your heels raise when tilting in your chair, the more pressure is being built up on the underside of your knees. This chair quietly offers a range of ergonomic features such as the pneumatic lift, back height and lumbar adjustment, locking tilt, seat depth adjustment, and the built-in waterfall seat curve.






All Affirm Series structural components (including gas cylinders, metal and plastic parts) as well as control handles are guaranteed against structural failure for 12-year warranties under normal commercial use and to the first purchaser. Casters and OM in-stock upholstery items have a 5-year commercial use warranty. Standard commercial use is defined as the proper usage for one single shift, a total of 40 hours or less per week and by persons weighing 300lbs. or less for the Affirm Series, unless otherwise specified by OM.

About OM

Founded in 1986, OM Inc. has grown from humble origins in San Diego to become an experienced and established, mid-market seating manufacturer dedicated to serving the long-term seating needs of large and small businesses, institutions and organizations. From day one though, their core mission and philosophy have remained the same: To solve everyday seating needs with our value-based, and ergonomics-focused Smart Seating Solutions.



About OM