Sheep all over New Zealand are lining up to strip down for our newest addition to the Dryerball family: 100 Percent pure New Zealand sheep's wool Dryerballs. That's a lot of naked sheep. Searching for a natural alternative to toxic dryer sheets. Look no further. With wool straight through to the core, our Dryerballs act as a soft, silent, natural fabric softener that lift and separate clothes, cutting down on both static and drying time. They also come in a reusable tin that doubles as a piggy bank. You're going to need somewhere to put all the money you'll save from using less energy from drying.