For you who choose a
healthy life style

sit active a work

Which office chair should you choose?

we have three different collections for you to choose from

InCharge β€’ ReForm β€’ Classic

Read more about each model further down

InCharge for office

Designed by Nanna Ditzel in 1993, the InCharge has revolutionised the world of ergonomic office chairs. The InCharge is based on human anatomy and is designed for you to be in control of your work situation. The chair has also been designed to be easy to manoeuvre and to support the body's need for movement, even in a job you do sitting down. The seat is pelvis-shaped, which encourages a natural S-curve to form in your spine and prevents your back from slumping, as often happens on conventional office chairs.

InCharge Office chairs
ReForm for office

ReForm is a minimalist and elegant office chair, which also features an ergonomic and supporting function. It is designed to give you an active and comfortable sitting posture, thereby helping prevent work injuries such as pain in the lumbar, neck and back, which can arise from challenging work positions or work where you sit down for hours at a time.

ReForm office chairs
Classic for office

The Classic chair was founder Claus Lundsgaard's idea of an ergonomic office chair without backrest and armrest. For more than 30 years, this chair has helped give many people a better working day with a more active sitting posture at the office. The smooth-running wheels make it easy to move around. The Classic chair is a natural choice for anyone looking for an ergonomic work tool as part of a healthy office environment.

Classic office chairs
Office chair
  • Avoidance of neck and shoulder tension
  • Maintains the natural S-shape of your spine
  • Provides optimal support and sitting posture
  • Achieves a natural balance in the body
  • Allows freedom of movement in the back, arms, and legs
  • The blood flows freely throughout the body

What should your chair look like?

You have the opportunity to customize your own ergonomic office chair. You can choose between a black lacquered or aluminum frame. There are various upholstery options available in different colors. Additionally, you can decide if you want a chair with a flexible seat and whether or not it should include armrests.

Office chairs with Flex mechanism

The Flex function has been developed by a Dutch physiotherapist. It is a unique feature that allows you to strengthen your core while sitting. The Flex function enables the seat to tilt 11 degrees in all directions, ensuring that it follows your movements and provides support during demanding work positions. It is a remarkable opportunity to promote flexibility and balance in your body.

Office chairs with flex mechanism
Black InCharge office

If black suits your interior better, we can offer the InCharge Office chair in a black version.

Black InCharge office chairs
Office chairs with ring bar

The ring bar should not be considered a backrest, but a practical handle that you can grab when you want to move the chair.

Office chairs with ring bar
Ergonomic standard office chairs

It would be a misnomer to call our chairs "standard" office chairs because they are far from ordinary. Each of our chairs is meticulously designed to provide you with the best ergonomic seating experience. They are sleek, functional, and incredibly easy to adjust. With a convenient lever for height adjustment, these chairs offer simplicity and convenience.

The seat's contour offers a naturally balanced sitting sensation, ensuring optimal comfort and support.

Ergonomic office chairs


The best thing you can do for yourself and your colleagues is to create a conducive work environment with good and healthy values that promote increased energy and happiness in the office.

You have the opportunity to try out ergonomic office chairs that offer a new and improved way of sitting. These chairs are simple, elegant, and incredibly easy to adjust.

In addition, you will experience the following benefits:

  • The chair provides a healthy and varied sitting position for tasks that involve long periods of sitting.
  • Maneuvering around the office is effortless, thanks to the smooth-gliding wheels. It's easy to roll over to a colleague's desk for a meeting.
  • The chairs are space-efficient, making them ideal for the office. They can be conveniently placed under the desk when not in use.

What is an ergonomic office chair?

An ergonomic office chair is designed to support your needs when you sit down for hours a day to work. Our ergonomic office chairs have a simple and minimalist look, which means they blend in well with any decor and are easy to style for individual taste and comfort. If you're looking for an office chair that's good for your back, then the Dynamostol ergonomic office chair is an excellent choice.

An ergonomic office chair is defined by a few simple, logical features:

• You get an ergonomically optimal work tool.
• The office chair is comfortable and allows you to be physically active.
• The special design makes the chair easy to handle and get on and off.

The difference between a saddle chair and an ergonomic office chair

Other ergonomic office chairs are designed like a horse's saddle ”saddle chairs”. At first, you'll feel like you are sitting comfortably. But the saddle is basically designed for a horseback, where the rider is in motion - on a saddle chair there is no natural movement, which could help to tighten up the legs, abdomen, back and shoulders.

Instead, you strain your hips in an unnatural outward rotation, which in the long run can be harmful and cause unpleasant pain in the hip joints. This is exactly what we at Dynamostol want to put a stop to. That's why we design ergonomic office chairs that are good for the back as they encourage you to adopt an active sitting posture.

If you choose a traditional office chair with backrest and armrest, you become passive and lose muscle strength and energy. You start to slump and strain the back, shoulders and neck. Above all, you slow your circulation. This doesn't happen with an ergonomic office chair without armrests from Dynamostol.

When should you choose an ergonomic office chair for the office?

If you're lucky enough to have a sit/stand desk, then the best ergonomic office chair will give you an open angle in your hips and knees. Your back will be naturally straight and you will sit in a way that activates the muscles in your lower back. This gives you maximum benefit from both the office chair and the ergonomics. If in doubt about whether you're choosing the right chair for you, we are always here to help and give you the best possible customer service.

If you work at a desk without a sit/stand function, the best ergonomic office chair is one that allows you to easily fit your thighs under the desk. This may mean you have to sit at a slightly lower height than usual. A way to compensate for this is to stretch one leg behind you, so that the knee points downwards. This helps you stretch the lower back and you get a much better work posture than on a traditional office chair. Another option is to place 4 bricks under the table legs and thus raise the table by the height you need. This gives you a great desk height where the sit/stand function becomes less relevant.

Working with a physiotherapist

If you're up for a challenge, we have an office chair with a Flex function, which we developed together with Dutch physiotherapist Wim Don. Flex means flexible, which means the seat moves. As a user, it feels exactly the same as sitting on a Pilates ball, although a benefit of the chair is that it doesn't roll away and you sit on a perfectly shaped seat.

Perhaps you're thinking "...that's not the sort of office chair I could use," but you can! And you'll love the feeling of being active as opposed to sitting passively with a backrest and armrest that only STOP you from moving freely.

Which model should you choose?

When presented with Dynamostol's office chairs; InChargeClassic and ReForm, it can be hard to know which one to choose. Basically, the ergonomic principles apply to all three chairs and to any ergonomic office. It's just a case of deciding which one suits you best. We would like to share our experiences here, although these are just a guide.

• If you have short legs or you're not especially tall, in our experience the Classic/ReForm is the best option.

• However, neither the InCharge, Classic or ReForm are wide chairs, but the Classic/ReForm chairs are slightly narrower than the InCharge, which means you can sit with your legs almost completely together. This is of no ergonomic significance, but is more a case of personal preference.

• You should generally sit higher than on a traditional chair, but not so high that the elevation at the front of the seat presses unnecessarily on your pubic bone.