Aircrew Socks
Just come in from a walk in the snow for a look at PPRUNE; by coincidence I'm wearing my last pair- they're great in your wellies and are still going (Not smelling)strong nearly 20 years after they were last inside a grow-bag!!
They were by far the best item of flying clothing when I was demobbed and I don't suppose that's changed in the intervening decades. I wonder if the inventer ever got a Knighthood??!!