Sedici Acqua Bladder Kit Replacement bladder system for the Sedici Acqua Backpack. Features: 3L BPA and PVC free bladder with slide-lock top Slide top opens to allow you to turn it inside out for easy cleaning and drying RF welded seams Built in quick release allows you to disconnect drink tube for fast refills without disturbing the tube routing Insulated drink tube cover Swivel lock bite valve