The Women's Air 2. 0 Windstopper Active Shell Jacket is light enough for summer running even though Gore Running Wear designed it for the shoulder seasons. Windstopper Active is Gore's lightest and most breathable windproof shell for highly active endeavors in windy weather. A partial mesh lining adds more breathability, and the back provides extra ventilation. The Air 2. 0 also features an adjustable collar for comfortable coverage, thumbholes for secure sleeves, and reflective details at the back for visibility in low light. There are also two zippered pockets at the back, one for your phone and the other for energy gels.