as other people mentioned already, it will be tight fit if you have many keys, There are six rings to put keys inside and six more to the outside. I don't have problem putting 5-6 keys for inside rings, but you should not have more than four keys for the outsides rings, otherwise it won't close. BUT this is for the first few month, after using a while, I realize the leather is getting soft (but not too soft) and now mine can accommodate more keys, yey