I just had to refute the unfair review...
I'm wearing one of these as I type and they are EXACTLY what they claim - It holds really tight, they're lightweight yet sturdy and they don't mar your clothes. I've moved it from left to right to center and practically stood on my head--and no matter where I place it, my Armani glasses do NOT fall off. It's cool that no matter how many times I've used it, the magnet always finds the exact place it needs to be. The back piece does a great job stabilizing the magnet. I'm not sure why anyone would be so derogatory and unnecessarily snide reviewing a produce they never even used, but anyone interested in this product would be well advised to only heed reviews from ACTUAL USERS!
Rating: 5 stars