Well, of course, it will be annoying to have loose sunglasses. And also, you will feel uncomfortable when your channel sunglasses are too loose, and they can often slide off from your eyes. So just take some measures to tighten them. At first, you can put on your eyeglasses, and then look in the mirror, for in that way, you just can identify precisely where the frame problems occur. Second, you should tighten the screws on your eyeglasses. Of course, when you do them, just be careful about it. In some cases, a pair of needle-nose pliers can be essential. Finally, a small, corrective bend in one arm at a time should be done. Anyway, you can just have a try.