ANTI-COLIC VENT, A clinically proven internal vent system significantly reduces colic, spit-up, burping, and gas, enhancing infant comfort during feeding. BREASTFEEDING FREINDLY, An elongated silicone nipple, designed like a breast nipple, facilitates an easy transition between breastfeeding and bottle feeding, supporting mother-baby bonding. STERILIZING FEATURE, MAM bottles offer convenience and hygiene with a 3-minute microwave sterilization process. The bottle is dishwasher-safe, with a removable top & bottom ensuring easy cleaning. THE ANTI-SLIP TEXTURE helps the nipple remain securely in your infant's mouth, ensuring a steady feed. MAM baby bottles are 100% free from BPS & BPA, promoting a safe, non-toxic feeding experience. SUSTAINABILITY, Crafted with bio-circular materials, the MAM 2 Pack, 11 ounces, ideal for your baby boy & the environment.