Better Winterizing Kits include the basic items to get your pool ready for winter, plus some additional supplies. In-Ground kits include the Arctic Armor Winter Cover of your choice, Water Tubes, and Chlorine or Chlorine-Free Chemical Kits. Above-Ground kits include the Arctic Armor Winter Cover of your choice, an Air Pillow, and Cover Seal. Choose from Arctic Armor Winter Covers with warranties of 8, 12, 15, or 20 Years.