MAM's Anti-Colic nipples are lovingly designed to resemble a mother's nipple during breastfeeding. To achieve this, MAM observed infants breastfeeding using ultrasound technology. The result is a unique flat symmetrical shaped nipple that fits perfectly in baby's mouth and makes the switch back-and-forth between breast and bottle easy. These Anti-Colic nipples reduce gas and discomfort by letting air flow freely as your baby drinks, reducing bubbles so babies swallow less air and feed more comfortably at their own natural pace. All MAM nipples are made from silicone that is free from BPA materials for maximum safety. These nipples fit all MAM bottles and are suitable for both breast milk and formula. The MAM nipple is available in five different flow rates: 0 – extra slow flow (newborn), 1 - slow flow (0+ months), 2 - medium flow (2+ months), 3 - fast flow (4+ months), and x - extra fast flow for thicker liquids (6+ months). MAM nipples are proudly made in Europe.