This morning I wore a cotton button front shirt under a cotton sweater with my khakis. I biked to work (short commute) and was a little bit warm when I got here. 5 minutes later I was freezing and I shivered the rest of the morning. Seriously, my fingernails were blue!

I rode home for lunch. After eating, I put my Ibex ribbies tank on under my shirt (it's not visible). I rode back to work for the afternoon and again was slightly warm when I got here. The difference is that now, 2 hours later, I am 100% comfortable. No more blue fingernails!!

Can I just say that cotton sucks.