Flying J / Pilot to install megachargers for med/heavy trks

Here's one for the big brain math whizzes. Say your feet are chilly, you want to put on some socks. You have wool and cotton. You have 5 pair of wool and two pair of cotton. The wool are warmer and you have a good supply. But but but.... you've become allergic and the wool will cause a terrible rash. The docs say it will turn to gangrene and kill you. Which pair do you choose? Let's just stipulate that hoping for a pair of polyester to show up isn't an option.:h