I think I had a hard time finding a specific example for this one because it's so general. LOL
I would love a couple layering turtleneck shirts. Lands End had a few in tall sizes, which would really be ideal. I usually wear a size medium in shirts.
Turtlenecks just make me feel cozy, you know? Here's some at Target, but they say juniors, which I am not. But that is a nice color, for what it's worth...
Target also showed some that were elbow length, which looked really cool. If I'm talking about a layering piece anyway, I'll usually have something else over it, so the sleeve length isn't very important. The tall thing would be cool though, to stay down over the top of my pants.