bumGenius wool dryer balls are the all natural alternative to plastic PVC dryer balls. Made with 100% wool, they gently bounce in your dryer to keep your laundry soft while reducing the amount of time it takes to dry, saving you time and money, while still making an eco-friendly choice. •100% wool•100% natural & safe for ALL laundry•Helps to dry your clothes faster•Reduces static•Softens clothing•Lasts for many loads to come