No, imagine a licorine candy https://www.google.com/search?q=licorice+candy&tbm=isch https://www.google.com/search?q=licorice+candy&tbm=isch but the cross secti

No, imagine a licorine candy https://www.google.com/search?q=licorice+candy&tbm=isch https://www.google.com/search?q=licorice+candy&tbm=isch but the cross section is a +. (It's easier if you get one that is not twisted. Something like https://www.sugarrushlane.com/products/filled-red-licorice-swedish-candy?srsltid=AfmBOopOhrX8c1uvrtQ4PD_ChEebZGHdJ-YMP2QemgHu4KwvcPVxXN9l https://www.sugarrushlane.com/products/filled-red-licorice-s... but with 4 instead of 5 parts. Also imagine each of the 4 parts has a different color. ) Now make a circle with it. If you don't twist it, you get an horizontal surface that looks like a thick border of a circle, and a vertical surface that looks like the round wall of a cylinder. If you twist half a turn, when you connect the extremes the top of the + in one extreme is glued to the bottom of the + in the other extreme. Something similar withe the left and right parts of the +. Now you have two overlapped copies of a Möbious strip, each perpendicular to the other. If you twist a quarter of a turn, when you connect the extremes the top of the + goes to the right, the right to the bottom, the bottom to the left an the left to the top. So you get only one "strip?"