EASILY WINTERIZE IN-GROUND POOLS: The Skimmer Plug closes off the skimmer and protects it and the piping from freezing. Fits like a "cork in a bottle" NO MORE WORRY OR HIGH COSTS: A simple and proven cost effective method to winterize your skimmer without draining any water. No tools required, simply push in place! PLUG & PROTECT ALL WINTER LONG: Made from RovaSeal , a high density water blocking foam that is both UV & Chemical resistant, the Skimmer Plug is a high quality and durable win…