5pcs/lot Reusable Washing Machine Ball Eco friendly Anti-static Anti-knot Wash Cloths Laundry Ball Usage Recommendation: For outerwear, pants, and garments made of sturdy materials, we suggest using 16-24 laundry balls per wash. For softer fabrics like underwear, T-shirts, and shirts, 12-18 laundry balls are ideal. Feature: 1. Hight Quantity Environmental PVC Material ,Durable And Reusable. 2. Usefully Protect Clothes From Being Twisted or Tangled Together. 3. Serve as an all natural fabric softener and drying accelerator. Specifics: Item: Reusable Washing Laundry Ball Material: Environmental PVC Package: 5/10/20PCS Laundry Balls Function: ECO Friendly Anti-static and Anti-Knot Cleaning Ball size: Approx 3-4cm Please Note: Please clean after using, hang dry in a cool and ventilated place. This will prolong the service life.