Not lined and a wee bit see through if you're going to be standing in the sunlight.  It's very comfortable fabric and easy to throw on for work.  If were priced a little bit lower, I probably would've given it four stars, but I guess I just think $52.00 is on the high side for something that takes a few bucks to make and is quite easy to sew.  It's a nice navy color.  Overall, I'm happy with my purchase.  Actually, I wish they had it in another color I liked - I might buy it again.