The womens castelli elemento 2 7x air cycling jacket provides complete protection from the cold winter wind made from 7xair stretchy fabric the aerodynamic jacket features a fully wind and waterproof external layer and a quilted fleece inner layer for warmth windshear inserts offer the perfect amount of ventilation to keep you cool while also transporting moisture away from your body better than sealed fabrics double layer front construction grants you more control over ventilation as t