Max. user weight
The highest weight that the chair is guaranteed to withstand with regular use — in other words,
the maximum weight of a seated person, allowing you to constantly use the product in normal mode without fear of unexpected breakdown. Note that many models are able to endure short-term excess weight without problems, however, anyway, it is not worth overloading the structure (and even more so doing it all the time): off-design loads will significantly increase its wear, and breakdown can occur at the most unexpected moment.
Base
The type of support on which the chair is placed.
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Cross with rollers. A structure in the form of several horizontal supports extending from one point in different directions. Such supports are usually provided for at least 5 — this prevents the chair from tipping over; a vertical bar rests on the point of their connection, on which the seat is located, and a transport roller (wheel) is installed at the end of each support. Armchairs with such bases are extremely convenient to move — the rollers make it easy to roll them. On the other hand, mobility requires some caution, and in some cases it is simply inappropriate.
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Legs. Classic legs similar to those used in ordinary home chairs. Unlike the cross, they are not equipped with rollers, and in order to move such a chair, it is necessary to raise it entirely. However, this cannot be called a disadvantage — in some cases (for example, in chairs for visitors, see "Intended use"), a stable installation and the inability to accidentally move the product are an advantage. Of any significant shortcomings, one can only name the tendency of the legs to push through the pressure-sensitive coating on the floor over time.
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Skids. Like the legs described above, such bases are not designed for frequent movement and are used in chairs designed to stay in one place all the time — primarily in models f
...or visitors (see "Intended Use"). Usually the skids are a kind of frame — a rectangle without one side, on which the whole structure rests. This shape not only provides an original appearance, but also has less effect on the floor than classic legs: the runners have a larger area of contact with the support, due to which they create less pressure.Headrest
The presence of a
headrest in the design of the chair.
The role of the headrest can be played as a stand, made separately from the backrest, and the upper part of the backrest — if it has a pronounced characteristic shape or a pillow is supplied in the kit, which can be installed at the request of the user. The simplest high backs that do not have a characteristic upper part are not considered head restraints.
Anyway, this feature provides additional comfort — especially when reclining back. On the other hand, if you have to sit mostly straight in the chair and the back plays a symbolic role, perhaps the best choice would be a model
without a headrest(especially since such chairs are cheaper).
Tilt of the entire chair
The ability to change the
tilt of the entire chair as a whole. At the same time, the back and seat remain motionless relative to each other, and the chair can be fixed at any angle of inclination (within the available adjustment). Note that in some mechanisms - for example, AnyFix and MultiBlock - such capabilities are available by definition, but the matter is not limited to this.
