I've been trying to get out in colder weather, and have been putting together some winter-specific apparel. Let me give a little background on what I wear when it's cold (so far we're talking temperatures in the 40s).
First thing is a long sleeve skinsuit (don't laugh ). It's a great way to avoid extra straps and elastic waistbands. I'd love to find one with long sleeves, full legs (not knickers!), and a chamois, but that's another story. Until recently, I've worn as many as two pairs of running tights (the plain nylon/spandex ones, with no lining or anything), and sometimes a pair of wind pants on top of that. I'll put on one of my normal jerseys and then my winter jacket. I have some thin glove liners and Castelli T-Tech full-fingered gloves. Finally, I have some Smart Wool socks, and I'll use Pearl Izumi wind shoe covers (the rubberized ones) with neoprene booties over that. I'll top it all off with a thin balaclava and my normal cycling glasses.
So with all that, my chest, arms, and head are pretty warm. My hands are a little chilly at first, but they seem to warm up after about 15 minutes or so. The trouble is that even with 3 layers of spandex and the wind pants, my legs (mainly my inner thighs) still get quite chilly, and that eventually spreads down my legs and into my feet. I'm pretty sure that if I could warm up my legs, then I wouldn't have a problem with cold feet.
Recently I substituted the running tights and wind pants for a pair of Assos AirBlock bib tights (I got them cheap for just $149, so I don't feel too bad about it). Anyway, I have the short legs and padding from the skinsuit under the AirBlock bibs. It was about 40° today when I finally got to try them out, and my inner thighs were still very cold. It just seems like I don't generate much heat in my legs, like a lot of you guys. What can I do at this point? I can handle an extra pair of thin tights, as that would be just one elastic waistband to deal with, but I don't know how much they would help. Would they be better over or under the AirBlock tights? I'd really like to avoid the wind pants, since they slide around and never seem to sit right anyway (these aren't cycling specific pants, though, but I'm trying to make due with what I have at this point). I don't mind layering, but after a certain point, enough is enough. I guess it's true that I inherited my mom's poor blood circulation.