Thyseed Anti-Colic Glass Baby Bottle for Breastfed Infants, Natural Feeding, Breast-Like Newborn Extra Slow Flow Nipple (0m+), 5 oz, 2 Pack

• Anti-colic base vent for fewer bubbles and calmer feeds: Clinically studied and published in JAMA. The base vent helps separate air from milk to reduce bubbles and swallowed air, supporting calmer feeds with less gas and less tummy discomfort.