The Crea Pro 28L from Mammut is a hybrid touring backpack for women that sets new standards with its wide range of features and unique "4 Stream Butterfly Vario” suspension system: Ventilation on all four sides helps to prevent annoying perspiration, a twistable butterfly frame gives the upper body great freedom of movement, the Vario system converts the ventilated air space suspension system into a full-contact back and the back length can be individually adjusted.