Sliding element and shoe sole

摘要

The unit (41) has a lower sliding surface arranged below an upper sliding surface to be slideable in two directions. A projection is arranged on one of the two surfaces for engaging corresponding recesses (45) on the other surface to limit sliding movement of the sliding surface with respect to the other sliding surface. The lower sliding surface has the projection for engaging the recess of the upper sliding surface. Independent claims are also included for the following: (a) a sole for an article of footwear (b) an article of footwear including an upper and a sole.