Description Material: the pool skimmer socks are made of good quality nylon fabric and have good elasticity to stretch easily and enough to cover the skimmer basket, suitable for using in swimming pools. Extend the Life of Your Pool's Filtration System: The pool socks protect the pump impeller and shaft sealing ring from damage and clogging, thus extending the life of your pool's filter and filtration system. Universal Fit: The skimmer socks can be used with most pool skimmer baskets. EASY TO USE: Install in seconds, simply slide the sock onto the basket and it's ready to collect debris from the water. Do not use the product while dissolving a chlorine tablet in your basket. Otherwise, the SOC will be eroded. And you should replace the socks every 4 to 6 weeks.