The MAM Matte Easy Start Anti-Colic baby bottle bundle includes two 9-ounce bottles featuring a medium flow, breastfeeding-like silicone nipple that supports an easy transition between breast and bottle feeding. Both BPA and BPS-free bottles have an ingenious vented base design that is clinically proven to reduce colic, gas, and reflux in 80% of babies. The vented base provides an even drinking flow while the anti-slip texture keeps nipples securely in baby's mouth. The self-sterilizing function enables simple cleaning by adding 20ml of water to the base, assembling the nipple, and microwaving for 3 minutes. The removable bottom ensures easy handwashing as well. Sustainably made with bio-circular materials, these bottles are ideal for eco-conscious families. One 2-count 9 oz bottle bundle comes in a neutral cotton color, while the other is a pale mint green, suited for baby boys. Both provide the same anti-colic technology and breastfeeding-friendly nipple for a comfortable, soothing feeding experience. As clinically-backed and mother-approved solutions to infant colic and gas, these complementary bottle sets cover essentials for the health and comfort of any newborn.