Inner Values

Upholstery training

How do you recognize a truly good sofa? It’s hard to do at first glance since every piece of upholstered furniture is full of little secrets. Only those in the know recognize the right sofa. In addition to the aesthetic aspects and the workmanship, it is naturally also a question of “inner values.” It’s important
to consider the firmness of the upholstery and the individually correct seating proportions. In a nutshell: Quality must be “sat out.”

Test sitting

You should always do extensive test sitting and have specialized personnel advise you and provide you with information. That’s the only way to find out whether a sofa is really cozy. Take your time and try out every imaginable sitting and reclining position on the piece of furniture of your choice.


Upholstering is a craft and manual work. Very soft materials are also used. That’s why there will always be dimensional tolerances. All specified dimensions are approximate dimensions. We reserve the right to make changes at all times due to model improvements and the correction of wrong information.

Characteristic upholsteries

Sitting comfort is mainly determined by the upholstery. And upholstery can vary quite a bit. Upholstery is either soft, casual or taut, depending on the character of the particular piece of furniture.

In principle, the following rule holds true: The softer the upholstery, the more you are going to sink into the sofa. On the other hand, a firm upholstery makes it easier to stand up and sit down. Sinking in is less pronounced and the sofa's appearance is more defined. The covering material also wrinkles differently. Soft upholstery wrinkles naturally on the seats, backs and armrests. The soft character emphasizes a homey, comfortable look. It is not unusual to use different seat firmnesses within a large upholstered group. The size of the sewn seat cover sections and the width of the elements also have a similar effect on the sagging and stretching of the seat covers. To summarize the situation: At casual, softer upholstery large seating width, more sinking in and more covering stretch. At tight, firmer upholsterysmall seating width, less sinking in and less covering stretch.

Firm upholstery

Firm upholstery

Upholstery construction in which the rippling of the covers is largely prevented by design measures (pretensioned upholstery). The cover is stretched tightly over the upholstery. Design- or model-related pulls, e.g. at curves, gathers are design- and construction-related.

Casual / loose upholstery

Casual / loose upholstery

Casual upholstery is characterized by a soft cushion structure. The cover is not smooth. The waviness of the covers on the seat, back and armrests is intentional and typical of the product, as well as seat marks and chamber markings, as a sign of high quality workmanship.

Especially casual upholstery

Especially casual upholstery

A particularly casual upholstery is characterized by a very comfortable and soft surface. This is achieved, for example, by inlets with various fillings (e.g. fibers, beads, down, feathers or similar). In the upholstery construction, a foam core or foam cushion usually represents the basic upholstery. Even when new or after initial use, the covers can show a clearly visible wave pattern on the seat, back and armrests, which is unavoidable due to the design, construction and material and will increase with use. The size of the sewn covers also has a similar influence on sinking and cover stretching. The softer the upholstery and the larger the seat surface, the greater the sinking in and ultimately the cover stretching.

Super soft upholstery

Super soft upholstery

A super soft upholstery is characterized by a super smooth, soft surface. The covers already show a distinctive curly image in new condition and increased wrinkling on the seat, back and armrests. Seat marks are due to model and design typical. With this super soft seat comfort, the wrinkling is desired and worked in with intent.

Types of upholsteries

The upholstery contains a block of high-quality foam which is especially manufactured for the particular model. Foam quality is generally defined by the so-called foam density which is listed in furniture-related product information. The upholstery is precisely adjusted to each seating area. To do justice to the different stresses and demands, the foam density is varied, for example, from the edge of the seat, to the lumbar region, to the shoulder segment or the armrest.

The upholstery with tested quality coil springs the springs are very close together and connected with spirals. Layers of different foam and upholstery mats are placed on top of this to achieve continuously uniform seating comfort.

In addition to the main upholstery there is a fine upholstery. This is the concluding layer before the covering is put in place. Here various Dacron-layers are also worked in so that the covering optimally hugs the particular model design. During the first few months of use, fine and main upholstery adjust somewhat to being sat upon. This is a normal process since the sofa adjusts to its owner.

Frame with bottom springs

The frame is made of solid beech wood or metal. Only non-warp materials are used here to ensure maximum stability. The bottom springs and the entire upholstery configuration depends on the design of the particular model. A distinction is usually made here between two types of bottom springs: The no-sag springs or bottomt springs with straps.


In workaday life of a seller, he often get the questions: Is it also availabe in...?, Is it also availabe with...? Is it also availabe as...?. Often it refers to reduction or extension of elements, other feet, an other seating comfort. Basically KOINOR fulfil every wish after discussing. In every single case the inquiry is checked. Unfortunately it isn't always possible.

Difference in seating comfort due to construction

Many add-on programs offer elements such as round corners, recliners or add-on corners with integrated footstools. Due to their shape, these types sometimes have a different bottom upholstery than a two-seater sofa. Either the type of bottom springs varies as such or the thickness and orientation of their construction. Since every shape requires a different upholstery setup, this naturally causes a different seating comfort or another seating firmness. This is due to the construction and is not a reason for complaint.