slcric, why not just email every brand directly and ask them to take the time to list all their trade secrets and send to you, this will save us years of questions and answers on here. If you want to know for interest fine but every topic is now how do I get this feature from this brand for my own use?
I'll answer this one regardless, the stickers are underprinted on a polycarbonate material which offers full resistance to cricket ball strikes. Not all companies do this and I've actually had to remove a very cheap brands stickers that are just printed onto gloss paper which is plain nasty.