Crafted from food-grade liquid silicone, this baby bottle Straw is soft, flexible, and gentle on baby's delicate gums. It is BPA-free, ensuring pure and safe feeding every time. The built-in Advanced Anti-colic System uses precision vents to prevent gas from entering baby's tummy, helping ease colic and spit-up. From material to design, every detail crafted for baby's health and feeding peace. Note: Straw only. Cavity ball piece is not included.