Recommend a wave of Nike barefoot series free3..
On the shoe wall of a sporting goods store, pick up a running shoe to observe. From the perspective of the outsole, the outsole is generally covered with all kinds of special lines, and there may be many grooves in the middle. Most of the colors are black, but there are other colors, and the thickness is generally 3-5 mm.
the main function of the outsole is to play the role of wear resistance and anti-slip in the process of direct contact with the ground, which is exactly played by the full lines and grooves. The material of the outsole is generally carbon-containing rubber, which is more wear-resistant, and the anti-slip effect and weight are also ideal.
between the outsole and the colorful upper part, there is often a white midsole. The midsole is generally about 1-2cm thick, and its main function is to cushion the vibration from the ground. (When people are running, the vibration transmitted from the ground to the body can reach about 8 times that of the normal walking state.) If there is no midsole, running will be very harmful to the whole body.
Therefore, various high technologies have been developed and applied to the midsole. They have different names, but they all have the same purpose, that is, to find ways to reduce and transfer the vibration and make you feel comfortable and safe during running. The materials of the midsole, except the patented technology specially used by various brands, are mostly made of foamed rubber such as EVA or PU. It provides good elasticity and light weight.
indeed, this part is permeated with high technology. For example, EVA is generally used as insole material, but the surface has been treated to increase the absorption and distribution function of foot sweat. There are also some insoles that can adjust the support to the arch of the foot in order to achieve the best fit between the foot and the shoe.
another part of the upper is the upper. This part is the most complicated and difficult part in shoe design. This mainly refers to how to balance the appearance, style and function of shoes. Big-name sports brands often introduce many attractive new styles every quarter so that buyers can pay for their bags. Functionally, the main considerations in this part are: breathability, comfort, close protection of the feet and ankles, firmness and convenience of shoelaces, etc.