If you're like me, you'd rather brave the cold weather than succumb to the mundaneness of the gym treadmill. To avoid freezing your buns off, you'll need warm layers like this Lululemon Think Fast Pullover ($98). This toasty long-sleeved top is insanely soft and just the right thickness to wear over a tank top and sports bra in 30- to 40-degree temps. Not only do the sleeves have thumbholes to prevent wind from blowing up your arms, but the bottom of the sleeve can be folded over like a mitten for days when it's not quite cold enough to wear a separate pair. The fabric around the neckline can be raised up for added protection, and then folded down once you get warmed up. If you get really warm, you can lower the three-quarter zipper. I also love the mesh fabric in the armpits to help regulate body temperature, plus the wicking fabric keeps me feeling dry, preventing that horrible chill you can feel if you get sweaty on a Winter run. Another bonus is the two zippered pockets to hold my phone, house key, and tissues. I have it in the dark heathered gray, but they also make red and light gray.
— JS
