Pool Sock SkimmerUse this pre-filter to effectively keep your pool clean. It collects fine particles, insects, dirt, dust, leaves, hair, protects the filter (including dog hair) and even catches sand released from the pump filter. So you'll have no more dirt, bugs, or hair floating on the water's surface. It also makes your pool crystal clear and incredibly inviting. PROTECTIVE POOL FILTER SYSTEMCollects all debris and prevents them from entering the pump. Protects the pump impeller and shaft seal from damage or clogging, extending the life of your pool filter/filtration system. Nylon Skimmer Filter SocksPool skimmer filter socks are made of nylon, polyester or polypropylene, not cotton, for longer life. This is a great way to reduce pool costs for anyone who owns a pool or an above ground pool. Sock Net for Pool CleaningIt is very simple and easy to use. You simply unzip the sock, place it in the skimmer and let the all-important water run through. Don't put the chlorine tablets on top as they will fall apart, keep them under the sock.