Many people have come across this problem with the Garmin Etrex series. After about a year of normal use, the rubber band around the Etrex is coming loose. Not just because it has been in a warm car or has been left in the sun. I live in Winnipeg, and hot weather is not part of the climate here.
So, my rubber band came loose. First a little bit, then a little more and then completely loose. Well, loose… The gooey, sticky glue of the seal between that rubber band and the plastic housing of the Etrex simply kept sticking to my hands.
At some point it was not possible to touch the %^&* thing without having to wipe my hands afterwards!
So I decided to do something about it. 5 months after the first symptoms.
Read more: How to un-goo a Garmin Etrex