It is a rule of mommyhood that in cold weather you must bundle your baby to the extreme – and one of the best ways I have found to do this is to start with a base layer of baby long underwear.  Patagonia has some which they call Baby Capilene.  It’s nice and light, and nice and warm at the same time.  Here is Cameron modeling his Baby Capilene this morning (He is 12 months, I got him the 18 month size so we’d have plenty of room):

I love my Baby Capilene

I love my Baby Capilene

It's comfy and cozy!

It's comfy and cozy!