The Swix Mayen women’s sleeveless aerobic vest is comfortable and convenient. It is designed to be versatile and allow for a full range of outdoor activities, especially during the colder months. Developed with a unique quilted pattern, this vest has all the features you need for your winter outdoor activities. The compact synthetic insulation keeps you warm on the run. The stretch panels at sides and on the back gives you exceptional ease of movement and temperature regulation. The sleeveless construction allows you to wear it over a polar fleece sweater in mild weather or over a quilted jacket on colder days.