Which WINTER shoes?, as opposed to 'Which waterproof' shoes?
In the REALLY cold winter of 81 – 82, when the morning ambient was minus twenty five Celsius, I had just discovered 3M Thinsulate. It had been on the market for only a couple of years and worked wonders in gloves.
Then I got to thinking, can I buy socks in this stuff. Nope, none available. The remedy was to buy a beanie had and strip out the Thinsulate to use inside my woolly socks. It worked.
However, since that winter, there has not been a winter morning cold enough for me to bother with my 'little toe – sox".
I have a pair of Marks & Spencer's 'BlisterResist' socks which do an admirable job, even at the minus temps over the last two winters.