After seeing how good Mike's are, I finally tracked down a pair of these. They've just arrived but sadly they're a size 6 Rather than go to the trouble of sending them back, I thought I'd see if anyone wanted them. Ideal as boot liners or for popping on for those middle of the night calls of nature. They're unissued so are spanking new - yours for a tenner posted.
Sadly not my size, but I'll second how great they are - I'm on my second pair (first ones lasted 12 years) and with tights or overtrousers I love them.