Bundle of 2 Items: 8-Ounce Baby Bottle Green & 5-Ounce Baby Bottle Green;Comotomo baby bottles are designed to most closely mimic breastfeeding to reduce bottle rejection and nipple confusion issues;Ultra wide-neck design allows easy cleaning by hand without a brush;Nipple and body is made of 100% safe hygienic medical grade silicone;Safe in microwave, boiling water, dishwashers and sterilizers