An integrated circuit package system is provided including mounting a first device on a carrier, mounting a second device over the first device and the carrier in an offset face-to-face configuration, and connecting the first device and the second device at an overlap. The cyclic azine compound is useful for an organic compound layer of fluorescent or phosphorescent EL device. The hollow shaft of the cap is received within a bore extending from the insole to the outer sole on the heel breast of the shoe between the heel and the shank of the shoe.