By Michael Lanza
There’s one thing we can confidently say about the clothing layers we use in winter: We get our money’s worth out of them. While a rain shell or puffy jacket may rarely come out of our pack on a summer hike or climb, we almost invariably wear every article of clothing we carry when Nordic, downhill, or backcountry skiing, snowshoeing, snowboarding, trail running, or climbing in winter. That’s money spent wisely to make us more comfortable and safer.