If you're the kind of guy who refuses to be imprisoned on a treadmill all winter, then you know the value of a weather-resistant jacket that is breathable and won't restrict movement. The Swix Men's Starlit Jacket fits the bill and is great for both Nordic skiing and winter running. Its polyester fabric cuts bone-chilling wind and is treated with a DWR finish for when the snow starts to fly. Laser cut ventilation holes just below the shoulders along with a micro mesh lining maximize breathability, so you can push yourself as hard as your muscles allow. A soft Lycra neck reduces the chance of chaffing, and two zippered hand pockets keep an energy gel or two close at hand for those extended sessions.