Wool has come a long way in recent years, from its thick-fibered, scratchy beginnings. Perhaps no baselayer represents this better than the Ibex Zepher. It provides the warmth of a Christmas sweater in a thin, sleek, comfortable package. It has the finest texture of the baselayers we tested. It was our favorite choice for lounging around or casual hiking.
The Zepher is a comfortable but expensive baselayer. If you are buying on a budget, try the Capilene 3 for another lounge-worthy layer. If you are looking for something with a bit more performance in the same price range, the Icebreaker GT is a nice alternative.