[Description] Thread-empty plastic shell installed with anti-rust permanent magnets of unique design, and with Multifunctional Ceramic Pellets inside [Advantages] 1. Adopt pure physical principle for washing, no harmful chemicals 2. One time rinse is enough, save water 3. Traditional Detergent can be reduced in volume or even completely replaced, eco, safe and economical 4. Natural way to kill bacterial, take care of your clothes 5. Effectively avoid twist of clothes during washing 6. Long life span, repeatedly used up to 365 washes or one year at least, normally much more 7. Easy to use, what you need to do is to put the Laundry Ball into the washing machine