Nellie's™ Dryerballs are designed to reduce drying time and soften fabrics naturally without using chemical fabric softeners. As Nellie's™ Dryerballs tumble around in the dryer they lift and seperate fabrics allowing air to flow more efficiently thus reducing drying time up to 25%. Saves time and money! The unique design of the Dryerballs nodules relaxes the fibers during the drying cycle. Clothes feel softer and towels are more absorbent.