describe EXTENDS THE LIFE OF YOUR POOL FILTER SYSTEM: The pool socks protect the pump impeller and shaft seal from damage and clogging, extending the life of your pool filter and filtration system. COMPATIBLE: Kyerivs Skimmer Socks will work with most pool skimmer baskets including Hayward, Skimming Master, Pentair - Swimquip and more. QUICK AND EASY TO USE: Installs in seconds, just slide the sock over the basket and it starts catching dirt in the water, removing dirt from your pool basket. Wash and reuse or simply replace. Material: These pool skimmer socks are made of stretchy micro-fine nylon mesh that acts as a net to attract and trap leaves, grass, hair, scum, oil, conifer, pollen, insects, and other debris. CAUTION: Do not use while dissolving chlorine tablets in the basket or they will corrode the coulter. If the socks are too dirty to slow the flow of water, you should change or clean them every 4-6 weeks. Once soiled, clean with a garden hose and reuse or discard (if heavily soiled). Specification 1. Product size: 8.66 x 4.72 2.2. Material: durable ultra-fine elastic nylon mesh 3. Replacement time: every 4-6 weeks 4. Package includes: 20pc Notice 1. Do not use chlorine tablets in the basket when dissolving, otherwise it will corrode the socks. 2. You should change or clean your socks every 4-6 weeks in case they get too dirty to slow the flow of water.