Boy, was I wrong! Because friction wise, these are great! Uncomfortable and unattractive. It was easy to assemble. pero son pesadas According to her not being able to hear me call her when shes wearing them ????I would like to recommend these, but with the caveat that you may have some glitching going on down the road. they ARE VERY comfortable. Once I solved that, I had what I wanted. Full disclosure. My cats hair was sticky.