A double head sleeper structure mainly comprises a shoe body and two
crossing shoestrings. The shoe body appears semicircular at both ends and
a little concave in the middle of two sides. The size of shoe body varies
to meet different user's need. The shoestring length is four fifth of the
shoe body length. The two shoestrings cross with each other at the center
of shoe surface of shoe body. The two ends of the shoestring attach the
two opposite sides of shoe body at a position two third of the shoe body
length from the shoe end. Such a design allows the user to put feet in
shoes without need to watch for the shoe head direction. Particularly,
when the feet are in shoes, the crossing point is forced to move a little
forward, so the shoes look just like traditional design to cover the
feet.