Streamlined and designed for looks and movement, the Costero sports two slash front pockets, one with a hidden zip pocket. A passport pocket hides securely in the front right pocket. Jade-infused fabric provides constant cooling and sun protection. A bit of Spandex gives you flexibility for the stairs of Telegraph Hill or bolts to catch the departing Underground. Sun protection and cooling: Sol Cool™ Jade fabrics slowly absorb and quickly release heat, creating a cooling sensation on the skin. The fabric is cool to the touch and wicks moisture. Cool and fresh: Sol Cool™ Jade fabrics are cool to the touch, and SILVADUR™ activates silver ions in the presence of undesirable bacteria, helping eliminate odor.