High quality pool skimmer socks: Made of high quality durable nylon material, with excellent elasticity and easy to stretch. It is not easy to damage or clog, which prolongs the life of your pool. Extend the life of your pool filter system: Pool socks protect the pump impeller and shaft seal from damage and clogging, thereby extending the life of your pool filter and filtration system. EASY INSTALLATION: The stretch fabric fits snugly in your basket so it won't be loose. However, you can install and replace it in a short time. Excellent help in cleaning your pool: The pool skimmer socks may contain leaves, grass, hair, oil, pine needles, pollen, insects and other debris that clog your pool filtration system. Please do not use the product while dissolving a chlorine tablet in your basket. Otherwise it will erode. And you should replace or clean the socks every 4 to 6 weeks if they are too dirty to slow the water flow.