The MAM Baby Bottle Bundle includes two sets of BPA-free anti-colic bottles to support your baby's healthy development. The first set contains two 9oz MAM Easy Start bottles with medium flow nipples designed to reduce colic. Their vented base is clinically proven to significantly alleviate colic, gas, and reflux in 80% of babies. The elongated, breast-like nipple supports an easy transition between breast and bottle feeding. These bottles also feature a convenient self-sterilization function by microwaving with water for 3 minutes. The second set includes two 11oz MAM Easy Active bottles with fast flow nipples optimized for babies 4+ months. Their wide neck and leak-proof caps simplify filling, cleaning, and mess-free feeding. The SkinSoft texture mimics the feel of the breast for high nipple acceptance. Both bottle sets are made of bio-circular materials reflecting MAM's commitment to sustainability. With breastfeeding-friendly nipple designs and anti-colic technology, these complementary bottles support your baby's comfort and health. The Easy Start bottles are ideal for younger babies, while the larger Easy Active bottles adapt as your baby grows older. This bundle offers a complete feeding system trusted by parents worldwide.