Not working for me.
I use these (or try to) on a pair of reading glasses. The arms of the glasses look about 1/8&#34; to 3/16&#34; wide. Bottom line I am constantly having to adjust the strap as they either move all over the arm or they fall off. The small spring collar used to &#34;lock&#34; the rubber loop to the glasses is not effective at all.  The strap is only useful if I tape it on.
Rating: 1 stars