[Material]- are made of good quality nylon cloth and they have good elasticity to stretch easily and enough to cover the skimmer basket, fit for use in swimming pools.[Size]- 22 x 13 cm / 8.66 x 5.11 inch (LW), and the package contain 30 pack, enough for your use for a long time, Easy to clean and reusable.[Application]- Our skimmer basket filters can catch the finer plant / tree leaves, pollen, beetles and other tiny things. You do not have to change the filter as often to save costs.[Easy to Install]- Install in seconds, just slide the sock over the basket and it's ready for collecting dirt from the water.[Best Choice]- Pool Filter Saver Socks Net Good protection for your garden pool filter system.Colour:WhiteMaterial:nylonSize:22x13cmPackage Contents:30 x .Only the above package content, other products are not included.Note: Light 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.