Use the power washing ball of the washing machine and the clothes to continuously rub for greater impact Make more clean clothes washed without damaging the clothes Reminder: Hard cloth laundry ball like pants jacket can be put 8-10 Put the laundry ball on 4-5 categories of underwear to wash color sent randomly Diameter: about 4.5 cm Material: PVC Package Included: 8/5/2PCS X laundry ball Note: 1. Due to different production batches, product details may vary. If you mind the difference, please buy carefully. 2. Please allow 1-3CM to be different due to manual measurement. 3. Due to the difference between the display and the light, the picture may not reflect the actual color of the item. Thank you for your understanding.