The MAM Easy Start Anti-Colic Baby Bottle Bundle includes two 5-ounce bottles with slow-flow nipples ideal for feeding newborns ages 0-3 months. Both BPA-free bottles feature an elongated, breastfeeding-like silicone nipple that provides an easy transition between breast and bottle feeding. An anti-colic vent system reduces gas, spit-up and colic for more comfortable feedings. The bottles are clinically proven to reduce colic in 80% of babies. The self-sterilizing design allows you to microwave each bottle for 3 minutes with water to sanitize and eliminate germs. An anti-slip texture helps keep nipples securely in baby's mouth during feeding. The removable tops and bottoms simplify cleaning. By bundling two 5-ounce bottles with the same trusted features, this set ensures you always have a clean bottle on hand for worry-free feeding while out and about or at home. The matching bottles also help avoid nipple confusion. Both are crafted from bio-circular materials, reflecting MAM's commitment to sustainability in manufacturing and packaging. With a high nipple acceptance rate and excellent colic reduction, these bottles will quickly become essential for parents looking to enhance their newborn's comfort and health. Their clinically-tested effectiveness also makes them great baby registry and shower options.