Review on Enhance Your Device Grip with PopSockets: Rose Marble PopGrip - Swappable Top for Phones and Tablets by Byron Forman

Not sure if they have changed the adhesive or not as some reviews have been left but I have NO problems with the gluing. I glued mine to the back of one of those thick iPhone cases and it stuck incredibly well. I actually misplaced it a bit and wanted to move it and couldn't. It seems to get stuck for life! This makes the iPhone much easier to use and I've had fewer drops because my fingers hold it more securely. I also love having something to play around with and like to pick it up and put it away when I'm worried or bored. Excellent purchase!