SAVE UP TO 40% ON YOUR  DRYER ENERGY BILLS! Watch your energy bills tumble by adding one tumbler dryer ball to your machine, saving you time, money and energy usage with every load while reducing your environmental footprint. With cutting-edge mirror HeatBounce™ technology, this dryer ball effectively reflects heat, drying your clothes much faster than other laundry balls. Works in all types of dryers.  Last up to 150 cycles.