Patent ID: 9516914
Filing Date: 2016-12-13
CPC Classification: A43B,B32B,Y10T

Claim Text:
1. A shoe comprising a sole and a top portion and a self-closing ventilation insert, wherein the ventilation insert is arranged in or attached to the sole and/or the top portion, which ventilation insert comprises a core element having and layers that are at least partially liquid permeable and at least partially air permeable, which layers comprise a first covering above the first air-permeable layer, a second covering above the second air-permeable layer, a first backing layer on the first covering, a second backing layer on the second covering, characterized in that the first and second coverings and/or the first and second backing layers compress the air-permeable layers together in partial areas and form a chamber structure, such that the maximum expansion of the absorber upon contact with liquid is limited by the chamber structure and the absorber is compacted thereby as it swells up, wherein the swelling and compacting absorber fills the chamber thereby closing the ventilation insert.