RH Logic 400 Comfort - Ergonomic Office Chair

MPN: 3553

The RH Logic 400 Comfort shares all of the same ergonomic qualities as the standard RH Logic 400 but in addition offers extra padding with improved ventilation to the seat and high back. This extra cushioning provides a very comfortable sitting posture to those who suffer from back pain, back ache, and muscle strain in the neck and shoulders. An excellent ergonomic, orthopaedic chair, the RH Logic 400 Comfort can be specified in a wide range of fabrics and extensive colour palette to match any office or home interior.

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Product Description

The RH Logic 400 Philosophy of Ergonomics

The success of the RH Logic 400 Comfort ergonomic office chair is founded on the two principles of upright posture and active sitting.  Designed to place the user into a correct sitting position, the chair will maintain this posture and back support, whilst allowing the user freedom of movement.

This 'Two-Point Principle' or 2PP encourages deeper breathing and circulation, stimulating muscles to keep active without undue strain.

If you would like to see this chair in operation, then scroll to the end of the page and watch the short video, demonstrating the features and adjustments on the chair.  Alternatively if you need information to specify your chair options, then read about the ergonomic features listed below. 

Ergonomic Features of the RH Logic 400 Comfort

Seat specification – the seat pad of the RH Logic 400 Comfort includes a thick wool layer to provide extra ventilation and a soft but supportive sit. The leading edge of the seat is tapered slightly to reduce pressure on the underside of the thighs and create an even weight distribution across the seat. This will enhance circulation into the legs.
An XL seat can be specified for the Logic 400 comfort chair with a 40mm deeper and 20mm wider seat pad than the standard Logic 400 seat. Where necessary, a coccyx cut out can be incorporated into the seat to alleviate pressure in the coccyx area and improve long term sitting comfort. For those users who need the ultimate in pressure relief, then a memory foam seat is available to give excellent comfort and relief.

Seat height & depth adjustment – easy to operate from the seated position with clearly labelled controls. The seatslide gives a 60mm travel to the seat that is adjusted to the length of the thigh.

Contoured backrest – the RH Logic 400 Comfort has a high backrest to give support for the upper back and shoulders. The backrest narrows towards the top and has little inward curvature which encourages the user to keep the shoulders ‘open’ and in contact with the back. Arm and shoulder movement is therefore less restricted. A subtle Tvedt cushion improves extra support between the shoulder blades.
For luxury style or to complement home interiors, opt for the upholstered backshell which is called the RH Logic 400 elegance. This option looks superb in Comfort faux suede or leather.  If you require the same functionalty of the chair with a medium height backrest, then follow the link for the RH Logic 300 office chair.

Back Height adjustment - the backrest height can be adjusted from the seated position, by releasing the locking lever and sliding the back up and down until the curve of the backrest engages with the lumbar area. This can be set precisely for the individual and its position will not change even when reclined.

Inflatable lumbar support - the extent of support in the lumbar area can be varied by using the inflatable cushion. Users with a deep lumbar curve may require more support in the cushion to achieve comfort.

Back angle adjustment - the backrake angle can be altered for individual preference and will allow for an upright or more relaxed working posture.

Back Tilt tension - the tilt mechanism is infinitely adjustable and should be set precisely for user weight and size. It will allow movement or dynamic seating as the chair follows your every movement, regardless of your working posture. This promotes an active work environment but ensures that the back support is always maintained through a range of activity. With correct settings, the user can recline backwards and the knee tilt mechanism will allow the feet to remain firmly on the floor.

Adjustable armrests - adjustable armrests are optional for the RH Logic 400 Comfort but in our opinion are essential. It has been calculated that up to 10% of bodyweight can be transmitted through the armrests and without that support, the shoulders can drop when tired and then roll forward. Adjustable armrests maintain the upper body geometry, particulary necessary for users with neck pain and shoulder issues. There are two styles available:
8S armrests – height and width adjustable. Armrest tops can rotate or be swivelled inwards, to achieve greater support for forearms when working with the keyboard. This variant has a more cushioned top and remains the most popular choice.

8E armrests – height and width adjustable. Armrest tops can extend forward and backward but not rotate. This option can be beneficial to slide backward and avoid contact with desktop.


Stock Chairs from RH are available for one week delivery in the following Gaja fabrics:

Gaja 60999 (black), Gaja 66005 (navy).

Comfort 0050 (black)

Leather 99999 (black)

RH Chairs offers a great opportunity to customise the working chair to your own requirements.

This will involve a factory order and an approximate delivery time of 3-4 weeks.

If you are in any doubt as to the anicipated delivery on your specific order then please contact customer services on 01727 827744.

Stock Chairs in the above colours can be returned to FineBack Furniture within 14 days provided that written notice is supplied within 7 days of delivery. The item must be returned in its original packaging and in a saleable condition. Once a product is assembled, the customer has agreed to accept the goods. Goods that display signs of use or assembly cannot be returned.

Orders that are placed for a bespoke product involving a selection of fabric type, fabric colour and chair specification cannot be returned.

For full details on our returns policy, please refer to our terms and conditions.


The RH office chairs carry a 10 year guarantee from the date of delivery when used up to 9 hours per day.

For usage over 9 hours per day (24 hr environment) a 5 year warranty will apply. For 24 hr use only, a leather or 24hr fabric must be selected to maintain warranty conditions. If you require your RH Logic 400 chair for 24 hour usage, for example in a control room environment, then follow the link for the RH Logic 400 24 hour chair.

If the upholstery on your RH Chair needs replacing after the warranty has expired, the seat and backrest cushion can easily be replaced, extending further the life of the chair.

RH products are manufactured to a very high standard and it is very rare that we encounter problems. If a fault does arise with the chair then FineBack will ensure a prompt response to rectify the issue.

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FineBack regularly monitor and adjust our prices to ensure that we remain competitive. If you have found the same product elsewhere for a cheaper price then just let us know and we will respond to you as soon as possible.

If you have a requirement for a bulk order, then please contact us using the form below or call us immediately on 01727 827744.

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