Review on 2 Long Eyeglass Chains For Men And Women - SIGONNA Eyeglasses String Holder Strap Chain - Neck Retainer For Eye Glasses And Sunglasses - Rope Lanyard - 2 Pack In Black by Jason Wilson

These straps have a small hole that attach to the end of the temple tips. They are rubber so any sized temple tip will go in the hole and the straps will be snug and will only move if force is exerted on to them. They are low profile and made by two different Cords on each side and attached by a rubber adjuster that tightens both sides. The rubber on the temple tips is extremely tight on my glasses that tightening the strap so my glasses don't move, fall off, or rattle around doesn't have any affect on the grip. They are well made and if you have hair they blend in underneath, and if you don't they are low profile. They aren't loose or hang down at all. These are great if you always wear glasses and need a strap because they are a bit loose or fall off your face when you're active or bend over. I'd give then 6 stars if I could. These really are great quality straps!