Since I wasn’t born in the ’20s, I only recently found out that the great people who sent rockets into space, needed to protect their pockets from leaking pens and other things that might ruin their lab coats. Those protectors were usually made from plastic.
The gentleman of today will need something more substantial than that:
A pocket protector that is handmade from beautiful vegetable tanned leather. By the way, if you don’t have pens to put into the protector, it’s a good way of securing your iPhone from slipping out of your shirt pocket. Or you could use it as a normal iPhone sleeve…
Do you want to try and make one? Download the pattern: