BDK Stitched Neoprene Car Seat Covers - Comfortable Polyester Protection - Red Accent Stitching

I don't see how these stay on and centered without sides. Can someone provide a picture of the "foam insert bar"?

do these seat covers interfere with heated seats or does the heat affect the covers? i have leather seats

Does this allow for back seat air bags that come from upper side of the seat?

is it easily removable to wash?