This is the men's vest layer you want to extend your season—it's light and lets you move, but it's also incredibly warm. Features: UA Storm technology repels water without sacrificing breathability. ColdGear® Reactor adapts to your activity level for the right breathability & warmth for what you're doing. Lightweight, low-profile insulation embedded between two layers of performance fabric for the ultimate mix of warmth & breathability. Welded quilting allows the free flow of insulation for more even distribution. Stretchy side and back panels for better mobility. Material: 100% Polyester. Colour: Rhino Grey. Size: S.