Lining it is a really good idea. I didn't even think of it. It's still a little too cold here to go out wearing just a Panta.
I used Twister from Cherry Tree Hill in Earth. It's the ball that lasts forever. I've made two pairs of arm warmers, and the Panta, and still have half of it left. I bought it here: http://www.yarnmarket.com/yarn/Cherry_Tree_Hill_Yarn-Twister_Yarn-1770.html