Office Chair Logic 300


The Logic 300 Office Chair gives excellent back support to your whole back.

The Logic 300 is designed around the human body - the chair moving points are at the knees and the hips. This results in the backrest staying in touch with your back at all times. Whether you are sitting back on the phone or up at your desk typing.

This chair complies with all EN 1335 standards

Fabric Select Swatch.

Please Note: There is a 6-8 Week Lead Time on this product. 

Out Of Stock

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Armrests - 4D Rotating...
€199.26incl VAT
Neckrest - Height & Angle...
€119.31incl VAT


€1,640.82incl VAT

Prices quoted are ex VAT

Constant Back Support
Our work more and more requires us to sit for longer periods of time.  The furniture we use must encourage movement and be able to support the body while we move.

The Logice 300 is completely adjustable to your bodies requirements, taking your height weight into account so the correct loading is placed on the body. 

Complete Back Support in all working positions.
You do not have to put any pressure on the chair, it will just follow your movements.

The Logic 300 will give you a chair that will fit you and give you full strain relief, comfort and suport.

A back care chair that encourages movement, gives back support for the upper back and lower back, thus helps to reduce back pain,
Logic 300 office chair specificationExtend Armrests Rotating

Suitable for individuals
up to 150kg
between 5' 2 - 6' approximately
between 5' 2" - 5' 5" when ordering with a neckrest

Backrest incl. lumbar pump: width 440 mm, height 510 mm

Seat: width 465 mm, depth 475 mm (seatslide 60 mm)

Seat height
: 410–530 mm (4Q)

in graphite aluminium (5X) and castors for carpeted floors (65 mm)

Optional Armrests
: Adjustable in height and width. Rotating. Armrest height above seat 215–295 mmLogic Neckrest from KOS

Optional Neckrest
: Height and depth adjustable

Delivery time on other colours other than black is approx 10 days.

Special Requirements

This range can be fitted with a range of specialist options.

This includes

Larger seat:  Width 485mm, Depth 515mm.

Seat with a coccyx cutout - see seperate chair

Delivery times may be extended on special requirements.
This chair complies with al EN 1335 standards.

Logic 300 Instructions



We stock this chair in Black.


In stock, goods will be dispatched from our ware house within 2-3 business days. 


Other colours have approximately a 2 week lead time.  We will email you with a delivery date nearer the time.


Box delivery with our courier.


Our experienced chair consultant will be in touch with you to ensure your chair is set up to suit your individual needs.


Returns policy.


In the event of receiving this chair damaged on delivery please let us know within 24 hours of receipt so that you can make a valid claim.


If you change you mind on purchase, please notify us within 14 day of purchase should you wish to return items.  You will need to ring for a Returns Note Number, which you will need to quote when returning items.   Goods must be unused, unopened, in a saleable condition and in their original packaging. 


If the item has been sent in error or is defective KOS will arrange collection and return.  Otherwise the onus is on the customer to arrange and pay for the return of the items.


Refunds will be issued on receipt of returned goods in saleable condition.

A chair for little people with a back problem
Sean W. on 01/05/2017 I never thought I'd find a chair that would fit me
Annette Shannahan - Owner ..

We at Abbey Physio and HealthcareDirect have worked very effectively and on many occasions with Seamus and the team at Kos Ergonomics when seeking solutions and resolving work-related...

Eileen Murphy - Physiotherapist ..

I recommend patients to KOS. They have experience and expertise with ergonomic solutions for patients with particular problems. When they sell a chair, they ensure that the chair is fitted...

Padraic O'Fiynn - Ergonomist ..

Since 2006, working as a chartered ergonomist with KOS Ergonomic solutions has greatly contributed to an early and safe return to work mainly for staff and where necessary students of the...

Kathleen Treanor - Ergonomist ..

I Kathleen Treanor have worked collaboratively with KOS and Seamus Kennedy since 2000. We have worked together with many organisations both public and private, to provide professional...

Sarah Carry - UCD ..

Since first contacting KOS Ergonomic Solutions in 2010, l have found their service reliable and efficient, combining excellent customer service and product expertise with a range of ergonomic...

Eileen Hannon - Stryker ..

KOS Ergonomic Solutions has supplied us with chairs for our Beading Room which have been very beneficial to the safety and comfort of our employees working in this area. These chairs are used 14-18...

Alison Minter - Paypal ..

Just wanted to say thank you for the quick and efficient service over the last year. It’s been a pleasure dealing with you and I would highly recommend KOS to anyone

Irene O'B - Physio & Ergonomist ..

Following a fall from a bicycle I sustained a T10 (mid back) wedge fracture with no nerve damage. I also reinjured my neck having sustained a whiplash injury some 20 years previously. Three months...

Karol Fitzgerald - Athlone IT ..

As I informed you previously to my numerous back problems, resulting from fracturing a couple of vertebra in my lower back a number of years ago. This later caused disc to slip, trapping nerves...


KOS Ergonomics Ireland

Since 1991, we have been working with companies and individuals as the leading provider of ergonomic office furniture in Ireland.

We currently provide a full ergonomic service from office to home with our ergonomic homeworker packages, sit stand desks , ergonomic chairs , remote assessments and KOS Ergonomic program management software.

Discover our wide range by booking a showroom consultation or by shopping online!

Visit Our Showroom

We can provide you with a VDU Assessments when you visit our showrooms in Dublin or in Holycross in Tipperary.

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