This Chicco Well-Being teat is made of natural latex, specifically designed to simulate the feel of the nipple during breastfeeding, the teat lengthens twice as much with respect to its normal rest position. The ribbed rings also increase the natural elasticity, allowing the teat to lengthen and giving it a texture similar to that of the maternal nipple. This physiological teat features an advanced anti-colic system that prevents your baby (0m+) from swallowing air, helping to reduce irritability, reflux and colic after feeding.