I recently read (somewhere) about a tube like thing that you fill with ice and wrap around your neck while riding in hot weather. The ice keeps your neck cool obviously, then as the ice melts the cool water trickles down your shirt for more evaporative cooling. Anyone used or know where I might find something like that? My Better Half could whip one up on the sewing machine pretty easily, but I would like to hear of any experience with one of these. I was riding in 100 degree heat last week and I think that would have felt pretty good!