In DC I will be just attending meetings in a hotel, and maybe walking at night to a restaurant. In Boston I am staying with my son at MIT, and no car, so we will walk a lot, say to to and from the subway, and maybe spend time waiting for buses outdoors. I'll just bring along the silk long undies I have, and play it by ear.

I've noticed that since my body is used to a milder climate (coldest it usually gets is the 40s, sometimes it drops into the 30s, rarely below freezing) that when I travel to a really cold place I need warmer clothing than folks who live there. I also need warm to stuff to wear in my house on those 30/40 days since our gas radiators can't really heat well in those temp ranges (no central heating). But, a day that starts in the 40s can end in the 60s, which is why I like pieces I can take off and have the inner layers be good on their own. Another thing I like about that ibex organic sweater. Maybe I'll just let them send it, and return what I don't like.