Would I be able to fit a pair of sweats...
Would I be able to fit a pair of sweats underneath? I get cold very easy and want to stay as warm as possible while on the hill.
My word of advice, get a closer to skin base layer that's either synthetic or a good merino wool. The purpose is to wick moisture away and not restrict movement the way sweatpants would. Trust me, it's one of the 'where have you been my whole life' moments once proper layering is achieved.