Material: the pool skimmer socks are made of nylon cloth with good quality, and the package include 20 pack, enough for your application for a long lasting time Size: 21.5 x 12 cm/ 8.46 x 4.7 inches (LW), and the socks have good elasticity to stretch easily and enough to cover the skimmer basket, fit for swimming pools Function: the filter socks just like a net to filter the rubbish such as leaves, grass, hair, scum and so on, help keep your pool clean and save cost Warm notice: most often, the socks can be applied for 4 to 8 weeks with its good effect, please clean them up to apply again or throw them away when they soiled Good choice: the good choice for you is to check the sock every week; If there are too much rubbish, they will overflow and pollute pools 20 pack pool skimmer socks, durable elastic nylon fabric filters of swimming pools, white Good elasticity: The pool skimmer socks are made of nylon cloth with good quality, and they have good elasticity to stretch easily and enough to cover the skimmer basket, fit for applying at swimming pools. Good filter: The filter socks just like a net with good filter ability to catch the rubbish such as leaves, grass, hair, scum and so on, help keep your pool clean and save cost. Note: 1. Most often, the socks can be applied for 4 to 8 weeks with its good effect, please clean them up to apply again or throw them away when they soiled. 2. The good choice for you is to check the sock every week or every day; If there are too much rubbish, they will overflow and pollute the pool. Specifications: Size: 21.5 x 12 cm/ 8.46 x 4.7 inches (LW) Color: white Quantity: 20 Package contents: 20 x Skimmer socks 20 pack pool skimmer socks, durable elastic nylon fabric filters of swimming pools, white Good elasticity: The pool skimmer socks are made of nylon cloth with good quality, and they have good elasticity to stretch easily and enough to cover the skimmer basket, fit for applying at swimming pools. Good filter: The filter socks just like a net with good filter ability to catch the rubbish such as leaves, grass, hair, scum and so on, help keep your pool clean and save cost. Note: 1. Most often, the socks can be applied for 4 to 8 weeks with its good effect, please clean them up to apply again or throw them away when they soiled. 2. The good choice for you is to check the sock every week or every day; If there are too much rubbish, they will overflow and pollute the pool. Specifications: Size: 21.5 x 12 cm/ 8.46 x 4.7 inches (LW) Color: white Quantity: 20 Package contents: 20 x Skimmer socks