view cart
IE 7 is not supported; upgrade to a newer version of IE or use a different browser.
Free accessory with UPLIFT desk purchase >

Knoll Life Chair

item#: KNL070

The award-winning Knoll Life Chair features a durable, slim silhouette with a flexible back and a contoured design for all-day comfort. Knoll Life Chairs are incredibly intuitive and easy to adjust. These slim and sleek ergonomic chairs move with your body and adjust quickly and easily to accommodate changing tasks and postures. Optional seat and back toppers provide extra comfort and style and help prolong the life of the chair. The Knoll Life Chair is also Greenguard certified and can contribute to LEED credits.

Choose Options Belowclick on for more info
- required

Mesh Color

All Knoll Life chairs come standard with a mesh suspension fabric that is durable, flexible and available in a wide range of colors.

Lumbar Support

The Knoll Life chair provides built-in lumbar support with the shape of the back frame and the back suspension fabric. However, the addition of an adjustable lumbar support offers more customizable comfort and superior support. The adjustable lumbar support mounts to your chair with magnets and features slow-recovery foam covered in your choice of three fabrics.

Back to options


A black urethane headrest can be attached to your Knoll Life chair to add extra neck and head support. The headrest features 3" of height adjustment along 12 positions, and is a perfect match to the chair's frame and arm rests. Please note that the headrest is not compatible with a back topper.

Back to options

Seat Height

Choose a cylinder to complement the user's height and workstation. Seat heights ranges vary as listed below:
  • Standard cylinder: 16" - 21.5"
  • Low cylinder: 15"- 19"
  • High cylinder: 17.5" - 22.75"

Back to options


The Knoll Life Chair ia available in three different types of armrests, or you can opt for no arms.

  • Fixed arms do not adjust; they are available with plastic arm posts and an integrally colored thermoplastic urethane pad with a glass-filled nylon insert
  • Height adjustable arms offer a 4" range of height adjustment that goes 5.5" - 9.5" from the seat, and they feature grey plastic arm posts and integrally colored thermoplastic urethane pads with a glass-filled nylon inserts
  • High performance arms:
    • Are height and width adjustable
    • Include armpads that slide forward and back with locked stops
    • Feature aluminum arm posts with an integrally colored thermoplastic urethane pad and a glass-filled nylon insert

Back to options

Leather Arm Pads

Knoll Life chair arms are available in Sabrina or Volo Spinneybeck leather upholstery. This custom option will add two weeks to manufacturing time.

Back to options

Seat Topper

The Life chair comes with or without a seat topper, and we strongly recommend the purchase of a seat topper for your comfort, especially if you sit for longer than five hours a day. The standard foam seat topper is 1.75" thick.

Knit Seat Toppers



Sabrina Leather

Sabrina leather is a very popular full grain leather. The special retannage Sabrina receives provides a smooth, tight grain and supple hand, making it an excellent choice for both elegance and high-traffic use. The average thickness is 0.9 - 1 mm, and the average weight is 2.25 - 2.5 oz per square foot. Sabrina leather is Greenguard certified and available in 114 colors.

Volo Leather

Volo leather is a lightly corrected, aniline leather. The light correction process refines the surface so it better accepts the grain enhancement done prior to finishing. Volo receives a special retannage that tightens the grain and provides a finer hand that other corrected leathers.

Back to options

Ultra Topper

For added comfort, upgrade your seat topper to a 2.25" thick foam Ultra Topper.

Back to options

Back Topper

Both back and seat toppers snap quickly on or off the Life chair, making it easy to change the look of your chair as often as you'd like. Standard back topper is 3/4" thick foam.

Back to options


Select from four low profile bases.

Back to options


Select from three caster colors available for carpet or hard floors. Glides are also available on the Life ergonomic chair if casters are not necessary.

Back to options

Nightingale CXO Mesh Chair with Headrest Option 6200 & 6200D
List Price: $1,845.00
Our Price: $949.00
Humanscale Liberty Chair
List Price: $945.00
Our Price: $799.00
Seating Inc. Grid 300 Mesh Back Task Chair with Optional Headrest
List Price: $885.00
Our Price: $489.00

The Knoll Life Chair is a unique and popular ergonomic chair that offers a number of easy to access and easy to use adjustments. This comfortable office chair from Knoll also features a slim design and a flexible tilting backrest. The chair's back moves with your body, and the chair's seat depth is adjustable to fit a wide range users. The durable cloth mesh offers breathability and flexibility. Add the optional seat and back toppers for a different style and extra comfort.

Knoll Life Chair Features

  • Flexible back frame follows user movement and ensures constant support
  • Synchronized recline is counter-balanced by the user's body weight, eliminating the need to adjust tension when engaged
  • Controls adjust easily from a seated position and are automated wherever possible
  • Flexing seatpan with waterfall edge, plus a unique cut-out pattern with a ribbed under-structure combine to provide a sleek, unique support system that noticeably reduces pressure points
  • Seat slider gives you a wide range of adjustment; the seat cushion moves back or forth a total of four inches
  • Optional adjustable lumbar support is constructed of soft, slow-recovery foam and attaches magnetically
  • Warranty covers 24/7 multi-shift usage for 10 years on mechanical parts; upholstery and labor is covered for three years

Technical Specifications

Chair height 38.5" - 43.75"
Chair width 26.5"
Chair depth 24.5"
Arm height from floor

Fixed arms:
25.375" - 30.5"

Adjustable-height arms:
22.25" - 31.25"

Base diameter 26"
Weight 36 lbs;
(Aluminum base adds 1.5 lbs)
Backrest 18.25" W x 25" H
24° tilt range
Seat height
(standard cylinder)
16" - 21.5"
(Seat topper adds 0.5" to seat height;
Ultra seat topper adds 1")
Seat depth 15" - 19"
Seat width 18.75"
Distance between armrests

Fixed arms:

Adjustable-height arms:

High performance arms:
17.25" - 19.75"

Disclaimer: We do not accept cancellations or order revisions for any Knoll items ordered. See Knoll's No Cancellations or Revisions Policy for details.

Knoll Life Chair

Life Chair Design Excellence Awards

  • Best of NeoCon Gold Award for Seating: Desk/Workstation Task Chairs, 2002
  • IIDEX for Office Seating and Sustainable Design, 2002
  • Good Design Award, Chicago Athenaeum, 2003

Professor Ergo's Thoughts:

I like to recommend the Knoll Life Chair to people looking for a comfortable ergonomic chair that's easy to use and adjust. This is a slim and efficient chair that offers a lot of support without the bulk. The Life Chair may look slight, but it's a strong ergo chair that's built to last with high quality materials. Add the optional seat and back toppers for more cushiony comfort.

Knoll Life Chair Seat Topper (Just the seat pad not the chair)
Original Price: $60.00
Our Price: $39.00
Knoll Life Chair Back Topper
Original Price: $253.00
Our Price: $177.00

Customer Reviews

Knoll Life Chair
4.5 Stars based on 4 Review(s)
4 Stars

Knoll Life Chair
July 25, 2012
I am very satisfied with the support provided by the Knoll Life Chair and the adjustability of it. The one thing that I would change is that there is no seat topper that is included with the basic chair. I assumed that there would be some sort of cushion associated with it and so did not order a seat topper. However, there is no cushion at all and, while comfortable, the seat gets very hard if you are sitting in it for a long time. I would recommend that some sort of cushion be included with the basic chair.

R Ratliff
5 Stars

Knoll Life Chair
May 28, 2012
When I retired, I couldn't bear to leave my wonderful Knoll Life office chair. I was delighted to find that The Human Solution offered all the options available for these chairs. At home now I'm still spending many hours at my computer, and the Knoll Life chair is keeping my back happy.

3 Stars

Knoll Life Chair
October 24, 2011
Chair is very comfortable, but make sure you get the casters for hard floors. If you use a chair mat to move around on, the casters start peeling and make a mess!

Wayne Schwartz
5 Stars

Knoll Life Chair
July 29, 2010
Very adjustable. Seat could use a little more padding but that may just be a mesh chair thing. Overall very good.

Chat with us

Or Call

8-7 Mon-Fri, 10-6 Sat (CT)