When I was in high school my mom made a coat for me out of icelandic wool. She took it to a tailor for advice on lining it, and they told her it couldn't be done. That was the wrong thing to say to my mother :roflhard: she totally lined it, with regular lining fabric and a layer of Thinsulate in between the lining and sweater layers. Holy cow, it is the warmest coat in the entire world -- in college I'd walk outside whenever I could because it was too hot to wear inside. :roflhard:
ETA...pics...I found it in my coat closet! I had a feeling it was in there...what a testimony to the quality of good knitwear ...this coat is almost 20 years old and it looks fabulous.