When I travel in hot weather, I put socks on the arms of the
captain's chairs.  that's right  - socks!  Slide the sock on so that
the heal is at the end of the arm rests with the foot and toe
pointing down to the floor. This keeps the arm rests grease/sweat
free and and is great for wiping your fingers after, cheese,
PB&J, spam, roadkill, and sunblock (left arm), cross winds, etc. :-)

  Malcolm S