Soles rather complex structure, broad terms, which may include all material and other bottom outsole, midsole and heel.
According to the narrow sense, it refers only to the outsole, the general characteristics of common sole material should have abrasion, water, oil, heat, pressure, impact resistance, flexibility, and easy to fit feet, after setting easy to change, insulation, easy to absorb moisture, etc., but also to tie in the end, have the brakes in the foot when walking Buzhi Yu slip and easy to change the conditions stop and so on.
Many types of sole material, the material can be divided into two classes at the end of natural materials and synthetic bottom. Natural materials including natural bottom end class leather, bamboo, wood, etc., synthetic base materials including rubber, plastic, rubber combined materials, recycled leather, elastic cardboard and so on.