As a manufacturer of office furniture we adopted the following naming convention to classify products.

CHAIR - a product without armrests
ARMCHAIR - a product with armrests

Chair selection should be determined by a search of a model that is a harmonious unity of a man and an object. This task is extremely difficult, however, development of modern furniture techniques has become a source of extraordinary opportunities bringing both producer and user closer to the ideal design.
Mechanisms used in the process of chairs manufacturing make it possible to adjust operating parameters such as height and shape to individual physical features.

ERGONOMICS

Ergonomics is the study of designing devices that fit the human body and their adaptation to human psychophysical abilities. Its purpose is to create a man – machine - environmental conditions model which effectively uses the effort of human work.

MOTOR SYSTEMS

Properly profiled upholstery does not provide full satisfaction of ergonomic sitting, therefore there are universally used devices, mechanisms and control systems ensuring the comfort of work.

HEIGHT AND WEIGHT

Individual height and weight determine the choice of a specific product model. Tall users with a massive physique should direct their attention to chairs and armchairs, in which a seat and  backrest are made as a whole and are not put together as a structure with accessories structurally linking these two important elements. Significant height determines selection of a product with a high backrest form and a large seat.

SEAT

LARGE SEAT

Limits the ability to use armrests and in case of adjustable armrests hinders their usefulness. In case of a profiled backrest, a too large seat causes a natural movement of the seat axis, which adversely affects body position of a sitting person.

DEEP SEAT

A deep seat’s edge may put pressure on thighs which results in leg numbness.

SHALLOW SEAT

Causes sliding down of a seat.

SEAT’S HEIGHT

All chairs and armchairs models are equipped with a height adjustment system. Commonly used are two regulatory systems:

1. Adjustment using a gas lift.

2. Adjustment with a screw column.

Selecting a seat height, please ensure that your feet freely rest on the floor and your knees are at a slightly obtuse angle.

BACKREST

Taking a seat in the chosen model of a chair or an armchair, it is important to pay attention to the angle formed by a backrest and a seat. The correct angle should be greater than 90˚ as it ensures a natural position of internal organs.
An important feature of the backrest is a properly formed lumbar spine part, which should adhere to the profiled backrest.

ARMREST

A prolonged stay in the sitting position causes fatigue of the lower limbs.
Properly selected and adjusted armrests eliminate this fatigue.

Properly selected or adjusted armrests should ensure:

• the correct height of the forearm so that the whole forearm rests on the surface of the armrest. Also, the angle of an arm and a forearm should be greater than 90˚

• that a track width of armrests enforces body position which is in one line with an arm and a forearm.