Instruct: Classify Amazon reviews into positive or negative sentiment
Query: great idea!

This is a great idea and I bought it because I don't always have pockets, and was forever placing my lens cap down and leaving it somewhere...then had to go and retrace my steps to find it. I have enjoyed using it, but the sticky part wasn't as strong as I thought it should have been - because I've only had it for just over a month, and the sticky part came off from the lens cap...I pressed it back on, but I don't know how long it is going to last. Maybe there is something that is better out there...because it is a great idea to keep up with that important lens cap! Hope this helps you!