Earth Mama Booby Tubes are a safe, natural, gel-free breast pack made with a 100% organic cotton shell and filled with all-natural flax seed. Booby Tubes are designed to comfortably fit inside your bra and deliver either hot or cold compresses to your breasts.Booby Tubes quickly help alleviate common discomforts experienced by nursing mothers from engorged breasts that become swollen, sore and aching. We love a product that does double duty! Once you have nursing established and comfort returns, your Booby Tubes will not be wasted. Booby Tubes become Boo Boo Tubes for kids bumps and bruises for years to come. Use warm or cold, depending on your nursing or children’s needs. Mama’s unique gel-free construction was designed with extra care to help reduce the risk of burns.