2) POLARIS 39-310 Zippered Super Bag Superbag 5 Liters for 3900 Pool Cleaners TWICE the Double superbag replacement!! Fits Zodiac pool cleaner model 3900 Sport Zippered SuperBag for Polaris 3900 Original manufacturer Parts ! Buy Quality! OEM POLARIS/ZODIAC PARTS 2 Super Bags are included in this listing!