Features: The strong structure adopts elastics and ultrafine nylon mesh cloth to catching most fine particles including silts, sand, dust, greases, gypsum and other debris. Pool socks can protect pump impellers and shafts seal from damage/clogging, thereby extending the service life of pool filter/filter system. These nylon pool basket filter socks is make of ultrafine mesh fabric and enduring elastics band, which can reused many time. The easy to stretch fabric fit perfectly into your pool filter basket. The basket can easily cleaned by washing and discarding filter socks regularly. Our skimming socks fit virtually any shape pool skimmer basket. Perfect for in ground and above ground pools, hot tub and jet tub. Specifications: Component: Strong Elastics Fine Nylon Mesh Quantity: 10Pcs/20Pcs/30Pcs Size: about 13x22cm/5.12x8.66inch Package Includes: 10Pcs/20Pcs/30Pcs Skimmer Socks note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.