I have bought 2 of the Coleman Compass/Thermometer zipper pulls. The first I attached to my keyring, and the compass fell out within hours, never to be seen again. I took it back and got a replacement. One sharp tap on the back, over where the compass is, with my multitool freed the compass. But the compass is so cheap, not inexpensive, that it rarely points north except by luck. Mine is totally worthless. I may try again, another brand. This time I'll check the compass before purchase. Caveat Emptor.