Wristlet phone holder comes with a phone tether tag that attaches to your wristlet bracelet. So this wristlet can hold your phone  or keys. To place your tether tag you must take your phone case out. Take the tether tag put it on the bottom of your phone case. Make sure the metal part goes through the bottom  hole. can you place your phone back in its case so the metal part of the tether tag will be sticking out the bottom of the case then you just hook it to your wristlet with the claw hook. also, please be sure to roll the wristlet onto your wrist and when you go to take it off, roll it off your hand. This keeps it from stretching out too much.