My mom got me some Zella work out pants for Christmas. I tried them on and wasn't a fan of the shape and feel, so I exchanged it for a Nike 'Pro Hyperwarm' half zip top. I love my zip overs for crossfit this time of year since it is so freezing in the gym, but this treasure turned out to be great for winter running! It has a light fleece lining in the inside to help keep warm during those near/below freezing runs.
Now it is my got to 2nd layer for winter running, when it isn't raining. It fits perfectly over my Lululemon Racerback tanks. I wish I had a pair of the matching running tights to keep my legs warm. For now the top will have to do.