OptigearEyeglass Temple Tighteners | 10 Pieces (5 Pairs) | Black

I was first given a pair of these about 5 years ago by an optical shop. LOVED them. Every year when I got new frames, I put them on the frames. Until this year when one broke while removing from the old frames. They do not fit my newest frames as well as past glasses due to where the hinges are placed or the style of hinge, not sure. But I put them on and manipulate/stretched them till they were where I needed them while unfolding the bows to hold them in place. They work great that way as long as I do not fold the frames, which isn't a huge problem as I only have one pair of glasses and only take them off at night. So as noted in other reviews, they do not work well with all frame styles, but I am making them work!

Works great

These worked OK when I first got them; made my glasses fit tighter and stop slipping off my face. But within a few wears, the rubber rings had slipped into the crack in the hinge mechanism, and were no longer sitting in the space where they needed to be to push the temple pieces tighter. Hard to explain.So I got the idea to add a second ring to each hinge, and I think this is going to work. Because the first ring is filling that gap in the hinge mechanism, that pushes the second ring up into that area where it's supposed to be. It shouldn't be able to fall out of this space. Now the temples are tighter and my glasses are on my face. I only just did this a few minutes ago, so will report back once I know how it works.

These work well for making glasses fit better.

These don't work as I originally assumed they would. Check your glasses, if your hinge closes completely when fully open, you may not be able to get these to work for you- they're weird

Even if you can’t find the spacer for your designer prescription glasses three of these do the job perfectly and they are not so conspicuous. I’m so glad I found them. Thank you Amazon and seller.

These are not thick enough and don't hit the hinge part at all. I have standard glasses so these might not work on most glasses. It's not until I decided to put two rings on each side that it finally hit the hinge part properly and worked. So it worked but I had to double them up.

If you've got really thick temple arms, these MIGHT work. As for my average ones, the center hole is too big. The tighteners keep slipping off. They don't work. I a constantly putting them back into position so they can do something. I have used tighteners like these (a.k.a. hinge rings) for years and years. This is the fir set that has not worked.