As timeless as your trusty water bottle and just as essential, the Stratus Range Full Zip Mock Neck provides the versatile layering comfort that will keep it on your body or in your pack 365 days a year. This classic and indispensable fleece jacket, featuring a heat-trapping grid pattern, is warm, breathable, and insanely comfortable whether you zip it over a T-shirt on a chilly hike or layer it up for cold-weather explorations.