Shoe sole having an active ventilation system for sports shoes and work shoes with steel toe caps comprises a middle layer which is softer than the two outer layers and contains air chambers

摘要

Shoe sole having an active ventilation system comprises three layers. The middle layer is softer than the two outer layers and contains air chambers. Two perforated valve layers arranged between the three layers can also be integrated in the outer layers (depending on production technology). Air inlet channels are provided in the lower layer. The air inlet is covered by an air-permeable material.