Catch All Trash and Debris: This 20-pcs are made of durable elastic and mini-fine nylon mesh that helps act as a net to attract and capture leaves, grass, hair, lifeless scum, oil , pine needles, pollen, bugs and other debris, preventing them from clogging your filtration system. Also great for spas, hot tubs, and more PROTECT YOUR POOL FILTER SYSTEM: Using pool socks will help protect and avoid damage and clogging, which will help prolong the life of your pool filter/filtration system. Any pool owner who has experienced pool filtration system repairs knows how valuable it can be Skimmer Basket Socks make cleaning skimmer baskets easier and tidier. When it gets dirty, just clean it with a garden hose and reuse it (or just throw it if it gets really dirty). Replace with new socks every 4-8 weeks FITS ALMOST ALL POOL BASKETS, UNDER AND ABOVE: Our pool skimmer basket cover fits almost any shape of pool skimmer basket. Perfect for in-ground/in-ground and above-ground pools PLEASE NOTE: Do not use with chlorine tablets dissolved in the basket - it will corrode socks. size: 13 x 22cm Material: nylon colour: white Package Contents: 20 x Swimming pool filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.