2 pack of Replacement brushes for Body for use with the Hydrasonic Cleansing System. What It Does Durable snap-on brushes for quick setup and cleaning. HydraSonic Body Brushes cleanse 14x better than manual cleansing. Use the body brush to keep skin on the body soft and smooth. Ideal for arms, legs, back, décolleté, and feet. Because the unit is waterproof, you can take it right into the shower with you!