Originally Posted by
Rick Smith
Is it wind that makes you cold on a ride (which it appears the rain cape would help with) or is it the temps themselves?
It's whatever wind gets through your clothes that'll make you cold; but it's the heavy physical activity that gets you overheated.
Most winter clothes are meant to keep people warm during light physical activity; they just aren't intended for people doing heavy work. You can unzip vents all you want, but it'll get to a point where you just can't cool yourself off fast enough and you'll have to peel off layers.