Comparison Halmar Ibis vs Halmar Andy

Dimensions of the seat installed in the chair in width and depth (from the back to the front edge). For models with variable depth (see "Adjustments"), the maximum value is taken into account when the seat is pushed forward to the stop.

Most modern chairs are designed for the average adult, so paying attention to size is primarily for people of a large, or, conversely, miniature physique. In width, the average is considered to be 45 – 55 cm, the narrowest models are up to 40 cm wide, in the widest it can exceed 60 cm. Similarly, a depth of less than 40 cm is considered small, up to 60 cm — medium, more than 60 cm — large.

Seat height from the floor. The optimal height for an average person is considered to be 40 – 50 cm, however, this is largely subjective, and the comfort of the chair for a specific user greatly depends on their preferences and physical characteristics. In light of this, many models offer the ability to adjust the height within a certain range (see "Adjustments"). For the best choice, it's best to "try out" in person to determine at what height you feel comfortable sitting and find a model with the corresponding features.

The main material used for the chair backrest. Note that some models are available in several design options, differing in materials; all available options are listed for such models.

— Fabric. Relatively inexpensive and at the same time quite practical material. It has decent strength, is easy to maintain, and can be made in numerous colors and designs; in addition, it provides good ventilation, which can be useful in hot weather.

— Leather. Natural leather is expensive and strongly highlights the owner's status (especially since leather products themselves look solid and luxurious). Accordingly, the main use of this option is for executive chairs (see "Purpose"). From a practical perspective, leather is durable and quite pleasant to the touch, however, it has poor breathability (which can cause discomfort in hot weather) and requires specific care, otherwise, it may lose its "marketable appearance."

— Leatherette. There are many types of leatherette, significantly differing in price and properties, and the most advanced ones are even used in premium-class "executive" chairs. Leatherette backrests are not as demanding in care as natural leather, but they are less durable and more prone to wear and tear.

— Mesh. Backrests in the form of a rigid frame with a fabric or synthetic mesh stretched...over it. The main advantages of such designs are their lightweight and good breathability. The design of the meshes allows their use even in executive chairs. The noticeable drawbacks include slightly less reliability and greater repair complexity compared to similar fabric (see above).

— Plastic. Purely plastic backrests are most often used in chairs with seats made of the same material (see above). They are strong and inexpensive, but due to their hardness, they are quite uncomfortable, which is why they are not widespread even among visitor models.

— Wood. Wooden backrests are in many ways similar to the plastic ones described above, except that they are somewhat more expensive and can have an original appearance due to the wood's textured patterns. They are also rarely used due to their hardness and the associated discomfort.