In order to better evaluate the “intrinsic value” of the sole, it is important to understand the function of the sole. Because this is not only used for visual purposes but also has a significant impact on the possible use, comfort, and many other functions of the corresponding shoe. Because the sole has the following basic functions:

Prevent environmental impact:
Cold, wet, hot, ice-there are many scenes where the environment has high requirements on the soles. Not only must it be strong enough to withstand them, but it must also guarantee the best protection for the feet.

Withstand “force” from weight or friction:
Another challenge of the sole is the “use” of the shoe because this has various effects. This includes pressure caused by weight and friction between the sole and the foot.

At the same time, there is friction between the sole and the ground, causing a certain amount of wear. Continuous exercise can also cause kinks, bends, or other stresses on the soles, which must be compensated to provide maximum comfort.

Compensation for soil conditions:
The unevenness of the ground must also be compensated to a certain extent by the sole. This means protecting your feet from sharp stones, broken glass, or other hazards. At the same time, if the shoes support the best balance, they can prevent the risk of spraining the ankle and reduce the ligaments and tendons of the foot.

Content source: How To Choose The Most Suitable Sole?