PERFECT PROTECTION OF THE FILTRATION SYSTEM: Our pool skimmer socks can help protect pump stepper wheels and bellows seals from damage or clogging and extend the life of your pool filter system. Perfect for Filtering: Skimmer socks can be used with most pool skimmer baskets. Pool socks can contain leaves, grass, hair, oil, pine needles, pollen, insects and other residue that can clog your pool's filtration system. Stretchy fabric fits nicely in your basket. Wide Compatibility Our pool divider socks are made of thick and ultra-thin nylon Size: 20 x 10 cm, high quality, durable, very elastic, easy to stretch, suitable for most types of swimming pool pumps, basket filters, swimming pool baskets or strainer baskets. What's more, you just need to put them in the foam basket, put them back in the basket and change your pool socks regularly. EASY TO INSTALL, NO HAND CLEANING - These socks pool filters are expandable. You simply slide the socks onto the basket and they install in seconds without coming loose. It fits perfectly into the basket of your pool skimmer. All you need to do is replace your used socks regularly. Note: Do not use this product when placing chlorine tablets in your basket. Otherwise, it will be eroded. You should replace it every 4-6 weeks or clean it when it gets too dirty to slow the flow.