ventilating hole in a sentence

1. In terms of creature comfort, what could be better on a hot, sticky day than a seat that incorporates an electric fan to blow cool air through ventilating holes in the seats?
2. Structure : The soft, floppy upper, with an inner adjustable sleeve, is punctured with eight ventilating holes on each side and lies atop a compressed air sole of the sort used in running and basketball shoes.
3. It's difficult to find ventilating hole in a sentence.