The most convenient way to put the sleeve onto your Sleep Robot is by holding it with the front facing you. Then you put the sleeve onto the sleep robot. This way you can properly check whether the control panel is still accessible. Then turn the robot around and close your zipper from top to bottom.
Note that upon arrival the sleeve will be slightly bigger than the size of the robot. That is normal. After putting your sleeve into the washing machine, the sleeve will slightly shrink, so that it fits perfectly to the size of the robot.