Basically, ski boots should aim to achieve the following goals:
— An efficient transmission of orders from the skier to the edge of the ski in order to control them. In addition, they should absorb shocks to avoid alterations in this transmission of forces to the ski.
— A good comfort, uniform foot pressure, temperature and humidity control.
Unfortunately, these two goals are incompatible because good ski control requires a great deal of rigidity - which is currently achieved through a plastic shell that compresses the foot and leg tightly - which brings discomfort and pain during skiing.