When you are out in cold weather for long there is a challenge that needs to be addressed. This is probably a design problem that is not solved yet.
When sleety wind stiffens your face the tips of your ears feel numb. They feel as if you can break them off like crackers to feed a carnivorous Polly. Given this circumstances you have to wear a lot of layers. I wore long johns, thermal vest that extended over the crotch, t-shirt, jeans, sweater, fleece and a windcheater. Now when you feel cold you also need to ‘drain your lizard’ as often as you can. And when it is cold your manhood is challenged and your willy shrinks.
Picture this. You run to the men’s room, find the urinal and frantically rummage through the layers to locate the diminishing appendage and ease yourself. This challenges motor coordination, accuracy, estimation of trajectory, performance in moments of stress and every possible skill that you have honed over the years to do a simple everyday task. Pee.