Bundle &ndash; 2 Items: Super Pool Winterizing and Closing Chemical Kit for Pools up to 35,000 Gallons and 4 1/2 x 15 ft. Air Pillow Bundle of 2 items-Super Winterizing Chemical Kit and 4 1/2 x 15 ft. air pillow Super winterizing kit contains necessary chemicals for closing pools up to 35,000 gallons 4 1/2 x 15 ft. 16 gauge vinyl air pillow protects your pool and cover from potential ice damage