They don't slip off!
Finally! Ones that don't slip off! Previous ones I've bought from other vendors would slip off my eyeglass frames...no matter how many times a day I'd tighten them... not so with these Holdie Eyeglass Straps ones... the band of rubber they use is more substantial and has squared off surfaces which ultimately provide more surface area to make contact with the eyeglass frame.  You can tell there's a good amount of friction when you try to manually slide them on the frame, even after using them for over a month. There is no problem even when eyeglass frames themselves have a slippery finish or have your facial oils on them.<br />So... Yay!  These are the ones you've been hoping for! They don't slip off! The straps themselves are durable, smooth, lightweight and pliable, you forget they're there.  I've had others that are heavier and stiffer that you are always "aware" of, not these, they are perfectly non obtrusive.
Rating: 5 stars