We used this JJ Cole Bundle Me last winter and loved it. I think we paid around $40 new for it. Here is a picture of what it looks like except ours is solid pink (no design). It is the thick, sherpa material on the inside and meant for cold winters.

http://www.amazon.com/JJ-Cole-Bundleme-Original-Resistant/dp/B005G37OLO/ref=sr_1_3?ie=UTF8&qid=1381692690&sr=8-3&keywords=bundle+me

Asking $15 shipped.