From the advertisements I assumed this would remain cool much longer than it did. While it was cool--maybe a half hour--it was okay, however, once it warms its irritating. Its then difficult to cool it unless you bring your own cooler of ice. You need to soak it for a while to get it hydrated and cool so public ice or water is not really an option. Its also slimmer than I had anticipated so not much of your neck is actually cooled. This one looks nice though.