1. Dimension
While ordinary office chairs are limited in their size options, ergonomic chairs offer a variety of adjustments to accommodate a wider range of body shapes and sizes. Herman Miller's Aeron is an example of an ergonomic chair that offers multiple sizes for optimal comfort and support. However, it's important to note that not all ergonomic chairs are suitable for everyone. Humanscale's Diffrient World chair, for instance, may not be the best choice for taller or heavier individuals. Ultimately, it's important to consider the specific dimensions and adjustments of each chair to ensure a good fit for your unique body shape.
2. Structure
Head pillow:
It is not uncommon to come across ergonomic chairs that lack headrests. The reason for this is quite simple - the primary purpose of a headrest is to support the head when one leans backwards for rest. Since most people sit in an upright position when working, headrests become unnecessary. However, it is always better to have one than not. When it comes to headrests in ergonomic chairs, the Humanscale Freedom series is excellent in providing comfort and support. The backrest of the chair is designed in such a way that it cradles the neck and head, making it perfect for taking short rests in between long work sessions.
Back:
The essence of the ergonomic chair lies in its backrest, setting it apart from regular office chairs. A mere curve won't suffice to address the real issue at hand. The backrest's material, alignment with the human spine, and adjustment mechanism are all crucial factors to consider. A well-designed backrest should provide users with a sense of relaxation, without any feeling of pressure, burden, or discomfort.
Lumbar support:
The presence of adjustable lumbar support is a common feature in ergonomic chairs, although there are some chairs that lack this feature. Adjustable lumbar support typically comes with options for up and down adjustment, left and right adjustment, strength adjustment, or asymmetric strength adjustment. However, it is not the adjustment mode that matters the most; what truly matters is whether the lumbar support and seat back can offer optimal support to the spine and lumbar spine.
Cushion:
Different materials can greatly affect the feel of a seat, especially in "high-end" ergonomic chairs that use patented materials for a unique sitting experience. Aside from the cushion material, ergonomic chairs distinguish themselves from regular office chairs through their shape design and cushion adjustment modes. To alleviate pressure on the hips and legs' nerves and blood vessels, ergonomic chair cushions are often waterfall-shaped at the front end. Moreover, seat depth adjustment can be achieved through fore and aft adjustment, altering the distance from the seat back, or through curling adjustment, modifying the length of the seat cushion. For example, the Leap and Gesture chairs by Shikai offer fore and aft adjustment, while Herman Miller's Body and Mira2 chairs utilize curling adjustment.
Handrail:
The connectivity of the armrests to the back of an ergonomic chair plays a crucial role in determining the overall level of comfort one can experience while sitting in the chair. When the armrests are connected to the back, they can maintain the same angle as the natural position of one's arms even when the chair is reclined, thus providing optimal support for the arms. Additionally, the adjustable features of the armrests such as front to back, left to right, and up and down can enhance one's sitting experience. Herman Miller has just launched its latest ergonomic chair known as "Cosm" which features a unique blade armrest design. Only time will tell whether it can become a classic in the field of ergonomic chairs after its official release.
Chair legs:
The chair legs of ergonomic chairs usually use five star legs, while ordinary office chairs use four foot, bow foot, etc. in addition to five star legs. There are three main materials for the chair legs: nylon, steel and aluminum alloy. Strength: aluminum alloy>steelnylon. As far as the weight of human body is concerned, the nylon chair legs are enough to bear./p
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