A quality run jacket makes running in cold weather easy and, dare we say, even enjoyable. But there is a lot to choose from, with waterproof running jackets, lightweight running jackets, and windproof running rain jackets all vying for your attention. And if, like many runners, you warm up quickly, it’s possible that you’ve been put off running jackets in the past, having had the unpleasant ‘boil-in-the-bag' experience.