The Q-Boid® fitness center inside the shoe is available for four different areas of application. The shoes you wear for sports are different from those you wear in the office or when you walk on a hiking track. Normal casual shoes for a stroll in the city are again slightly different. This is self-explanatory, as shoes have to withstand different types of strain. The Q-Boid® product naturally adapts to the individual requirements so that you can use your fitness centre inside the shoe in all relevant circumstances.