It's really hard to find polo-collared sweaters that are fitted and nice, which suggests to us that they must be completely out of fashion right now. And that's kind of a shame, because this is a style that looks great and is so easy to wear. Unlike a V-neck, you don't need to worry about which kind of T or woven shirt to layer under it. The collar lies flat and won't get crunched under the mass of a big heavy scarf and overcoat. It gives you a level of warmth unmatched by a polo shirt. We wish these things were easier to buy. Unfortunately the Tom Ford and Zara sweaters shown here are both from previous seasons, and the Lands' End model needed extensive tailoring in order to not fit like a tent.