Full Belts discussion

hello, this is my first post here, i’ve been interested in chastity belts for some years and finally got the courage up to buy one, a ‘cheap’ one from ebay:

I’m quite happy with it and love the feeling of it. I would like to attempt to make a male chastity bra (there doesn’t seem to be anything on the net) like a female one but obviously with smaller cup size, I’ve been researching materials required and drawn a blank at the liner, the closest thing I can find is something like this has anyone purchased liners from CB manufacturers? Can you remember the price? Bascally any advice would be helpful thanks.