Features: Material: Sponge Color: White Contents: 10 oil-absorbing sponges. p> Note: The cleaning sponge will turn slightly yellow after use, but this does not affect the second use. It is normal for the sponge to change color after cleaning. Due to manual measurement, the sizes displayed may vary slightly. Easy to use: The swimming pool sponge accessories can be used to clean the swimming pool by yourself. When the oil is saturated, just pour it out and rinse the sponge. The performance is better after cleaning. The pool skimmer will change color after use, but it does not affect the second use. It is normal for the sponge to change color after cleaning.