Traps All The Gunk And Debris: Made from durable elastic and ultrafine nylon mesh, this pool skimmer socks helps to act as a net to attract and trap leaves, grass, hair, inanimate scum, oil, pine needles, pollen, bugs, and other debris, preventing them from clogging your pool's filtration system. Also works with spas, hot tubs, jetted tubs and more Protects Your Pool Filter System: Using a pool sock helps to protect and avoid damage and clogging, thereby helping to extend the life of your pool filter / filtration system. Any pool owner who has been through a pool filtration system repair knows just how valuable that can be Makes Cleaning Your Filter Basket A Breeze: Skimmer basket socks make cleaning skimmer pool baskets easier and less messy. When soiled, simply clean with garden hose and reuse or throw away (if heavily soiled).