If you live in a climate that has temps that get below freezing in the winter, you will need to winterize your pool in order to prevent costly damage to your swimming pool and equipment. Proper closing of the pool in the fall not only makes for an easier pool opening in the spring, but also helps protect your pool and equipment from damage during the winter. The Swimming Pool Winterizing Kit is a premium off-season product bundle to help you get your swimming pool ready for the off-season. Each kit contains Arctic Blue Algae Protector, Arctic Blue Shock, and a step-by-step instruction guide for winterizing your pool. Arctic Blue Algae Protector prevents the growth of all types of algae during the cold winter months and is approved for use with all pools and filter types. Arctic Blue Shock oxidizes and clarifies the pool water through the off-season and is ideal for all types of pool surfaces. Using this pool winterizing kit in the off-season will make opening your pool in the spring so much easier. Available in 2 sizes to treat pools up to 12,000 gallons and 24,000 gallons. Small Winterizing Kit for up to 12,000-gallon pool includes: Arctic Blue Shock (2 lb) Arctic Blue Algae Protector (1 pt) Swimming Pool Winterizing Guide Large Winterizing Kit for up to 24,000-gallon pool includes: 2 X Arctic Blue Shock (2 lb) Arctic Blue Algae Protector (1 pt) Swimming Pool Winterizing Guide Our swimming pool winterizing guide provides step-by-step instructions for testing, preparing, cleaning, and winterizing your pool for the cold winter months.