Review on Chums Original Cotton Eyewear Retainer - Adjustable Unisex Sunglasses Keeper (Standard-End) by Jair Baltrusch

I like this in theory, but the ends don't fit the earpieces of my sunglasses. The earpieces on my frames don't look big (they Eddie Bauer sunglasses), but they're a bit rubbery with a non-slip texture to keep them from sliding off your ears. This makes them impossible to insert into the ends of the glasses strap. No amount of effort will make them slide on. In contrast, I just tried them on my daughter's sunglasses which have a smooth earpiece of about the same size and they slid right on. Bummer.