Knoll Life Chair

Available in a wide range of colors
Shop ergonomic chairs by UPLIFT Desk

Never feel bogged down again by bad posture with the Knoll Life Chair. With its uniquely designed slim silhouette and flexible mesh back, the act of sitting is made comfortable again. Slender, sleek, and ergonomic to its core, you'll love the intuitive adjustment and recline features, sans all of the levers included on most office chairs. Sitting just got a whole lot simpler.

The Life Chair's back adjusts with your body, and the chair's seat depth is adjustable to fit a wide array of users. Durable cloth mesh brings breathability and flexibility closer than ever, giving you an ergonomic seat that's as comfortable as it is supportive. Add the optional seat and back toppers for even more comfort you can count on.


  • Flexible back frame adjusts as you move and ensures stable support
  • Synchronized recline is counterbalanced by the user's body weight, eliminating the need to adjust the chair's tension manually
  • Controls adjust conveniently from the seated position
  • Flexing seat pan with waterfall edge provides support without stifling circulation
  • Seat reduces pressure points on legs
  • Wide range of adjustment in the seat slider
  • Optional adjustable lumbar support is made of soft, slow-recovery foam and magnetically attaches to the chair
  • Warranty covers 24/7 multi-shift usage for 10 years on mechanical parts, upholstery and labor is covered for 3 years


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: 17.75"
Adjustable-height arms: 18.75"
High performance arms: 17.25" - 19.75"


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

Fixed 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

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

High performance arms are height and width adjustable and they include armpads that slide forward and back with locked stops. These arms feature aluminum arm posts with an integrally colored thermoplastic urethane pad and a glass-filled nylon insert.


Leather Armpads

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



Select from four low profile bases: black plastic, grey plastic, painted matte aluminum, or polished aluminum.

Knoll Life Chair Base

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'' H
Low cylinder 15''- 19'' H
High cylinder 17.5'' - 22.75'' H


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.



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 Suspension Fabric Color

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


Seat Topper

The standard foam seat topper is 1.75" thick and upholstered in a wide variety of fabrics or leathers.

Knitted - Base grade

The Knitted Seat Topper is Knoll's standard, base grade material. This lightweight and breathable fabric will keep you cool and comfortable throughout the day.

Hourglass - Grade A

Hourglass is a classic fabric with a dry, wool-like feel. It is composed of 15% polyester, 8% nylon, and 77% post-consumer recycled polyester. A water-based cleaner or mild, water-free solvents may be used for spot cleaning.

Cameo - Grade B

Cameo is a modern fabric with a soft, chenille feel. It is composed of 75% cotton and 25% viscose. For spot cleaning, use a pure, water-free solvent.

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.

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.


Ultra Seat Topper

The standard foam Seat Topper is 1.75'' thick. For added comfort, upgrade your seat topper to a 2.25" thick foam Ultra Topper.


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. The standard back topper is 3/4" thick foam. The back topper is available in a wide variety of fabric or leather choices to match your seat topper.



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: The headrest is not compatible with a back topper


Knoll No Cancellation Policy

As an authorized Knoll dealer, we do not accept cancellations, order revisions or returns for any Knoll items ordered.

Please make sure you are ordering the correct Knoll item and the correct Knoll item configuration before placing your order. If you have any questions about the Knoll products we offer or about the no cancellations, revisions or returns policy on Knoll items, please call us at 800-531-3746 before ordering. We're happy to answer any question you may have about Knoll products or about Knoll's no cancellations/revisions/returns policy.

Customers attempting to cancel, revise or return an order for a Knoll product from Human Solution will be subject to significant Knoll manufacturer change/cancellation fees for the order or orders.

5 Reviews Hide Reviews Show Reviews

  • 5
    amazing chair

    Posted by Jason on Apr 6th 2017

    I bought this for the looks. After sitting in it I'm very happy it also is extremely comfortable. A Big upgrade from my previous chair. Recommend.

  • 4
    Knoll Life Chair

    Posted by Ebert on Jul 25th 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.

  • 5
    Knoll Life Chair

    Posted by R Ratliff on May 28th 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
    Knoll Life Chair

    Posted by RBurke on Oct 24th 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!

  • 5
    Knoll Life Chair

    Posted by Wayne Schwartz on Jul 29th 2010

    Very adjustable. Seat could use a little more padding but that may just be a mesh chair thing. Overall very good.

This product comes standard with a 10-year limited warranty.

Return Information

  • Due to manufacturer policy, this item cannot be returned once received nor cancelled once ordered.
  • Please contact us with any questions about this product before you order.
  • To view the full returns policy on Knoll products, click here.
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