Smartwool Mid 250 Crew
I love the fit on my 250 Crew. After working in the industry for over 10 years I've accumulated base layers from every company you can imagine. Smartwool's fit is one of the few with enough length to give me full range of motion while paddling or hiking. The wool is almost as soft as my favorite synthetics but I can wear it for days on end with no stink. I ride to work in mine, wear it all day at work, ride home, then put it back in my drawer. The 250 is good for shoulder season and winter, but a bit warm for summer use.