Superior wear comfort for dynamic outdoor activities. Jack Wolfskin used a very special synthetic fibre fabric to make Jack Wolfskin's Women's Dynamic Hollow Half Zip. Even when damp it still feels warm and pleasant to wear. The fabric wicks sweat quickly away from your skin and onto the surface, so the garment dries in an instant. And the special stay-fresh features mean that you don't have to worry about unpleasant odours when you are working hard. Jack Wolfskin have included stretchy mesh under the arms to ensure you can move freely when you are out on the trail.