Booby Tubes are natural, safe, gel-free breast packs made with an organic cotton shell and filled with all-natural flax seed. Use warm or cold, depending on your nursing needs. Store Booby Tubes in the freezer and wear them inside bra between feedings to help the tenderness of engorgement and to comfort breasts during weaning. Booby Tubes can also safely deliver warm, moist heat to tender breasts to encourage milk flow, maintain open milk ducts, promote let-down and comfort infection. Mama’s unique gel-free construction was designed with extra care to help reduce the risk of burns. Made in the USA in a fair trade factory.