Package Included - Our Pool Filter Socks Have 10 Pieces In Total, The Size Is 20 X 13. High Quality Material - Our Pool Filter Socks Are Made Of Good Quality Nylon Fabric And Have Excellent Elasticity, Can Be Stretched At Will.Easy To Use - Installation Only Takes Seconds, Just Slip The Sock Over The Skimmer, It'S Ready To Start Cleaning Water Dirt. It Can Be Reused After Cleaning Or Replaced Directly. Perfect Compatibility - Pool Filter Socks Can Be Used With Most Pool Skimmer Baskets. It Protects The Swimming Pool Filtration System And Thus Prolongs The Life Of Your Swimming Pool Filtration And Filtration System. Effective Filtration - Ii Can Filter And Remove Debris And Tiny Particles In The Swimming Pool, Such As Grass, Leaves, Hair, Oil, Insects, Etc, Making Your Pool Cleaner.