The Nike AeroLayer Jacket for women is a comfortable running jacket. The jacket is light, warm and water repellent. It is a good jacket for cold wintry conditions. Nike AeroLayer technology is made of lightly insulating material a water-repellent outside and a lined inside. This keeps you warm and ventilated during your activities. The polyester padding features laser holes that help to trap warmth inside, resulting in a warm jacket which is also light of weight.