Nike Aerolayer. Women's Running Jacket. WARMTH WITHOUT THE WEIGHT. Lightweight and warm, the Nike AeroLayer Vest uses a water-resistant shell for cold conditions. All-new quilting delivers more comfort in questionable weather. Nike AeroLayer technology utilizes a layer of lightweight insulation between a water-resistant shell and inner lining to provide warmth and breathability. A semi-translucent lining showcases the technology. Heathered body features an updated quilting design for more comfort. Polyester fill throughout has laser-cut voids that trap warm air. The result is warmth without weight. Knit fabric at the sleeves has a warm feel.