> What's this part of a wallet used for?

What's this part of a wallet used for?

Posted at: 2014-07-17 
So I'm buying a new wallet and I've noticed a few models with this small pockets. It looks as if it's made for two coins but it wouldn't make any sense. (Also, they often come in pair) I'm enclosing a picture of it (I've highlighted the part) Thanks So I'm buying a new wallet and I've noticed a few models with this small pockets. It looks as if it's made for two coins but it wouldn't make any sense. (Also, they often come in pair) I'm enclosing a picture of it (I've highlighted the part) Thanks

Could it be for sim cards? Often when travelling I would put a local prepaid sim card in my phone, and these small pockets would be handy to store my regular sim card.