Like the other reviewers said, this is fleece-lined. It is very well made and very cozy. I was quite impressed by the stitching on it too. It most certainly was made to last.
Be warned, though, the fleece lining does effect the sizing. Normally I would wear a size medium, however, all that fuzziness made it really tight. Personally, I don't like having my shirts painted on, so I'm exchanging it for a large.
I ordered the yellow. It is a much richer shade than the picture showed on my computer. It is lovely.