The wire is too stiff for me. If there is a gap between the back of your head and the wires and you lean back into a headrest of any type your glasses will get pushed off your face.

These are working great and holding up well. I used them all summer and bought a Second set at the end of the summer. They are inexpensive and if they save me from damaging another pair from sitting on them or knocking them off a table then it's worth it.These are also great to wear boating. Once I pick up speed I can tighten it snug to my head and hit the throttle and they stay in place great.The sunglasses sit well on my head, look good and fit over the ends of the sunglasses well. They are…

I use this on a pair of costas. I live a pretty extreme lifestyle and these stand up to the battle. I trust these in all conditions to keep my prized pair of sunglasses attached to my body!