The correct selection conditions for the material of the mountaineering sole

The sole includes crampons insole and outsole
In the end: direct contact with the foot, usually made of soft nylon material, shape design is based on the characteristics of the human foot, and some are still in the bottom and the outer bottom embedded between a thin steel plate, and coated with a coating, a leather pad on top.
Different types of mountaineering boots have different interior design and material, and their comfort is different. There are also some alpine mountaineering boots, with an inner bottom, and an intermediate bottom between the bottom and the outsole. The middle bottom is also made of nylon synthetic materials, and the water content has a shockproof buffer microporous structure.
Outsole: direct contact with the ground, usually made of synthetic rubber materials, different manufacturers, adopt different synthetic materials, but its purpose is to effectively protect the foot, increase comfort, and heel are relatively low, light, non slip bottom, both to prevent the decline of irregular grooves.