Even socked feet bother you? Wow, you must have a fit when someone wears sandles!
I use the slip-over socks you get on an International B Class or F Class flight and put them over my own socks when I take my shoes off. I'm sorry but I have to take my shoes of on a 5-hour flight. Who would take off there shoes and socks?, that's just gross. What I meant was that the food crumbs will go through your socks and touch your feet.
CF