Treat Yourself With Our December Must Haves

Brrrr! If chilly weather isn't keeping you from running or biking outdoors, then you need layers to keep you warm. This Mizuno Full-Zip Hoody ($85) is made with Breath Thermo technology, which actually generates heat for added warmth. I wore this over a sports bra and tank on a 30-degree run and it was perfect. The hood keeps your head toasty and is able to slip down when you get too hot. The thumbholes prevent wind from going up your sleeve, and I love that the zipper goes all the way up to your chin. This is also going to be a great baselayer for under my Winter coat when snowshoeing or skiing. Definitely worth it!

— Jenny Sugar, editor