Sports shoe sole with elastic layer of evenly hard material between tread sole and upper - has perforations right through elastic layer in heel and foot arch parts

摘要

The perforations (16) penetrating the elastic layer (13) of the sole are most numerous in back part of the heel, in relation to the surface area of the elastic layer in order to increase the elasticity and shock absorption of the tread sole. The perforated part's area decreases from the back of the heel forwards to the arch of the foot part. The unperforated part correspondingly increases in those parts (17, 18) of the sole's structure (12) giving support to the foot. ADVANTAGE - The sports shoe especially is suitable for various types of foot by having the sole's elastic layer made of homogeneously hard material, perforated at the heel and foot arch.