I'm obsessed with the waffle knit wool shirt I purchased - I've worn it for most of my runs this winter! It really does keep me warmer, even when sweaty, and true to their promise, it can be worn many times before needing a wash.
I wish they were more size-inclusive! I hacked it and went with a men's size since women's sizing ends around a size 8-10, but the running community is more diverse than ever before.