Replacement for the foam covers for head phones

I have these old but in great shape head phones but the foam is kind of wearing out.
I was wondering does any one has an idea as to what to use to replace those foam covers for headphones? Since those foam replacement covers are no where to be found here.

Goodhart8 years ago
are the the HUGE head phones, or the little ones?  Some places here is one example
If you look at the website of where your headphones came from (Sony, Audio Technica, etc.) they might sell the part online as part of the service/repair for their products.