The LaVie Lactation Massager is a milk expression tool that helps improve milk flow and letdown. Also to relieve pain caused by engorgement, plugged ducts and other breastfeeding symptoms. There are 5 different ways to use the Massager. Water resistant; safe to use in the shower. Empties the breast faster. Stimulate the breast. Made from medical grade silicone. The Massage roller can be used as a pre-nursing or pumping tool.