90% Sponge 10% Nylon Remove Scum from Ice Bath tub: Reusable. The cold plunge tub eliminating scum balls will help keep your cold plunge tub water clear. Prefect for cold plunge tub & ice bath tub. The eliminating scum balls is built to last and a must have ice bath tub accessories. Easy To Use: Simply place the Cold Plunge Tub Eliminating Scum Balls in your tub when it's not in use to absorb body oils and debris. These Ice Bath Tub Oil Scum Balls will help keep your tub clean Easy To Clean: Washable & Reusable, Long-Lasting. You can Rinse the Cold Plunge Tub Eliminating Scum Balls weekly with cold water, or gently wash in the washing machine on a cold setting. After washing, you can place it back into the ice bath tub while it's still wet. Attention: Please Do Not Put it In The Dryer, Air Dry ONLY! Ice Bath & Cold Plunge Accessories: The Ice Bath Tub Scum Ball is a sponge that absorbs oil and scum. it's great for keeping your Ice Bath Tub clean and makes a good gift for Ice Bath lover. cold Plunge tub/ice bath tub/ice bath & cold plunge accessories/cold plunge water filter/ice bath water cleaner/ice bath cold plunge water chiller treatment kit cleaner stabilizer/ice bath water thermometer 4 Pcs Cold Plunge Filter Scum Absorber, Ice Bath & Cold Plunge Accessories, Reusable Ice Bath Tub Filter Oil Scum Balls Floating to Keep Water Clear, Cold Plunge Water Filter, Ice Bath Water Cleaner