Warm hug or cooling comfort? Let your boobs decide! Earth Mama's Booby Tubes are innovative and safe breast packs to help with the common discomforts of breastfeeding. Completely gel-free to help reduce the risk of burns, each tube is a clever spiral-shaped organic cotton shell, filled with organic flax seed. When heated, Booby Tubes deliver warm, moist heat to tender breasts and can help encourage milk flow, avoid clogged ducts, promote let-down, and comfort the symptoms of infection. Stored in the freezer, they offer cooling comfort, for help with reducing swelling, breast engorgement relief, and weaning. A Quick Booby Tubes How-To Warm Booby Tubes in your microwave for 20-40 seconds and apply as necessary. Or store in the freezer and wear them inside your bra between feedings. Materials: Flax seed filled organic cotton shell.