If you're an active snow bunny, you need a jacket that will protect you from the elements and allow you to move freely. Softshells are the way to go because they'll keep you warm but are lightweight enough to prevent you from overheating. I just got a new one from Cloudveil. This Rayzar Windstopper ($300) has been great for skiing on the slopes and snowshoeing in the woods.
I love the flattering fit, the bulkless shape, the soft fleece lining inside, and the adjustable hood that can be cinched down to prevent wind from getting to my head and neck. In 20° F weather, all I wore underneath was a wicking sports bra, wicking tank, and a baselayer, and this wind-blocking jacket kept me toasty warm. I even got a little sweaty, but the fabric inside helps your perspiration vapor escape, so I didn't feel damp or chilly. The outer material allows snow and water to just slide off, so you don't have to worry about getting wet or feeling weighed down. Another plus is the two outer zippered pockets that keep my cell phone, keys, and tissues safe, and there are two pockets on the inside to hold even more stuff. If you're not a fan of blue, this jacket comes in three other colors.
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