Tunit or resin rubber outsoles were developed in the early 1950´s with the purpose to imitate leather. With a base of vulcanized rubber made with synthetic SBR rubber reinforced with styrene resin. Normally it´s produced in sheets and cut into shape.
- Leather like
- Low Cost
It´s generally used for the leather look, abrasion resistance and flexibility. The fact that it generally costs less than leather makes it a popular material for outsoles.
This type of outsole is often reffered to as "German" outsole in China.