I live in Michigan and wear Birkenstocks year-round for orthopedic reasons. I needed a nice looking, woman's trouser sock to wear to work. These would be perfect if they were not so thin - you can see the color of my toe nail polish through the fabric. I wouldn't want them this thin even if I were wearing flats or loafers, at least not in the winter -- office buildings get chilly. Maybe Gold Toe has other women's trouser socks that would fit my foot health, fashion and warmth needs better. Any suggestions?