Ergonomic Seating Solutions OPERA 30 Instructions Download Page 2

For a healthy posture, your spine should be lengthened and the natural 

‘S’ shape of your back promoted. This will ensure you are not sitting in a 

slouched or hunched position and that your back is protect against strain 

and fatigue. The following illustration shows how to sit with a good posture 

when using your chair at a computer workstation.

Firstly, we would like to take this opportunity to thank you for choosing 

one of our Opera 30 chairs. You have made an excellent choice and we are 

confident the chair will provide you with all the support and comfort you 

need for many years to come.

HOW TO SIT WITH A 

HEALTHY POSTURE

 

Head in upright 

position

Top of screen 

at eye level

Shoulders relaxed

Screen arm’s 

length away

Backrest at a 10° 

backward angle

Forearms parallel 

to desk

Ears, shoulders and 

hips in a straight line

Slight downward 

angle from hip 

to knee

5cm gap between 

back of knee and 

edge of seat

Feet flat on floor 

or using a footrest

SEAT 

HEIGHT

SEAT 

DEPTH

Once you are happy with the 

height, release the lever to set

Pull the chair height lever up 

to release the lock. To raise the 

height, you will need to take 

your weight off the chair

SETTING UP YOUR CHAIR

THANK YOU

When making any adjustments, please sit with your bottom as far back into 

the chair as possible. This ensures you are fully supported and discourages 

slouching. Once the chair is set up, please fine-tune the settings, over time, 

so you always enjoy optimal comfort and support.

For the best results, please follow these instructions in the order provided.

1

3

Adjust the height so that your 

hips are slightly higher than 

your knees

Pull the seat depth lever up to 

release the lock

1

To increase the seat depth, 

slide your hips forward 

and the seat will follow your 

 

movement

To reduce the seat depth, 

push your body towards the 

backrest. Aim to leave a 2 to 

3  finger  gap  between  the  back  of 

your knees and the seat

3

Once you are happy with the 

depth, release the lever to set

2

2

4

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