When you're spending lots of time on the trail--whether it's for a few hours of running or a few days of backpacking--you know that you'll need to stay prepared for inclement weather. But you also know that that protection shouldn't come at the cost of extra weight. With the Salomon Bonatti WP Jacket you'll be able to have lightweight protection from rain and snow when you're out in the mountains and far from home. The 2. 5-layer membrane shuts out moisture to keep you dry in wet weather, while subtly integrated back vents, a breathable construction, and the full-length venting front zipper help you shed excess heat and stay cool. Thanks to Salomon's MotionFit design technology you'll be able to move freely as you hike and run up steep switchbacks, and the snug-fitting hood with an elastic gaiter stays firmly on your head for comfortable coverage in rainy weather. And when the skies clear up and you feel like it's safe to shed your shell, you can stuff the Bonnatti into its own chest pocket, toss into your pack or hydration vest, and keep on moving along the trail.