The LaVie Warming Lactation Massager is the first milk expression tool that combines continuous warmth and vibration to improve milk flow, relieve pain, and save time. Sit back, relax, and let the smooth vibrations and warmth make your breastfeeding and pumping experience better! By using the warming massage pads, you will... Reduce clogged ducts Cut pumping time Empty more effectively Improve flow and letdown Say goodbye to microwaving heat pads! The massage pads include two heat modes, and can be used with or without vibration, or with vibration and no heat. It's fully customizable to fit your needs. Designed to comfortably fit any size breast, shape, and position. With built in rechargeable batteries, these massagers can be used anywhere, anytime.