ZERO.ZERO ANTI-COLIC BOTTLE^TM physiologically The Zerø.Zerø™ bottle mimics the physiology and functionality of the breast and is suitable from the age of 0, for both breast milk and powdered milk. The patented anti-colic bag inside the bottle contracts as the baby sucks, just like the mammary glands. This protects babies from swallowing air, which can cause painful colic. It also prevents the air from oxidising the milk and destroying the nutrients. The zero.zero bottle teat mimics the shape, length and feel of the mother’s nipple, so there is no confusion. This allows mixed-feeding babies to easily return to the breast without rejecting it.