how can a man almost who is 48 years old in good shape dress sexy in near freezing weather?

What Rei said -and remember: you don't need to be half undressed and showing lots of skin to be sexy. You can be just as sexier in a heavy coat and scarf than in a speedo -half of being sexy is confidence and poise: that kind of sexy shows through even the heaviest winter coat. And Chapped, goose-bumpy, frost-bitten, bright red exposed-to-the-cold-skin is never ever sexy!

Nice layers of good fabric - cashmere sweaters and carves, tailored flannel pants, dressy boots. Maybe some high-end down, like Moncler.

Put on a sweater and lots of attitude and voila! You're ready