Yeah, natural elements can effect the wallet in some way?
If not, then report it back here lol.
But, I`d prefer the paper wallet still and put in my normal wallet etc.
I think the paper wallet is just played out. It has its disadvantages as well, since its paper it can get wet and run the ink, tear, burn, get tossed with receipts when cleaning a physical wallet. Metal or hardware wallets are the future