Blue Wave Silver 12-Year 18-ft Round Above Ground Pool Winter Cover Pool size: 18 feet Cover size: 22 feet Protects against sun, snow, ice and wind 4 foot overlap to ensure there is no stretching or ripping Pool size: 18 feet round Cover size: 22 feet round Protects against sun, snow, ice and wind 4-feet overlap to fit most top rails Heavy duty cable and winch tightener included