Running in the cold never felt so good. This insulated vest will protect you from the elements with stretchy, water-repellent tech fleece fabric placed where you need to move. Designed for Running Water-Repellent, Glyde™ Fabric(Click to Close) Water-repellent Windproof PrimaLoft® insulation is warm, even when wet Four-way stretch, breathable tech fleece fabric is DWR-treated to protect you from the elements