The newest version of the Run: Hills Pullover comes in a "running" luon. I tried it on today and fell in love. It has a matte finish and is super soft - like a chamois. It's so soft you could make pajamas from this fabric. It felt very breathable and lightweight. I would love to see more long sleeve tops in this fabric. I like the Run: Hills Pullover style but think it is a bit too much shirt for my needs with all the body mapping and seaming. I would love to see a simpler long sleeve shirt, more like the Run: Sport Henley or the Run: Swiftly Tech, in the running luon fabric to use as a base layer for cold weather walks or as overlayer in a chilly gym.