ANTI-COLIC, BABY-CONTROLLED FLOW: The patented medical grade anti-colic bag contracts as baby sucks, preventing air swallowing and reducing colic, reflux and ear infections. Milk only flows when baby sucks, mirroring the natural breastfeeding experience. Traditional Slow, Medium & Dense flow nipples also available for purchase AGE-APPROPRIATE, MEDIUM FLOW CONTROL: Designed for babies 3M+, this flow rate lets medium-density liquids through to match growing needs, supporting smooth feeding sessions with milk at a steady, comfortable pace. Multiple nipple flows available by age PEDIATRIC DENTISTRY ENDORSEMENT FOR CONFIDENCE: This anti-colic bottle is endorsed by the SEOP, providing caregivers reassurance about feeding suitability while respecting oral development. The nipple mimics the shape and placement in baby's mouth while the silicone bag regulates flow similar to mammary glands to minimize bottle rejection and nipple confusion CLINICALLY BACKED PERFORMANCE: An independent study conducted by AIJU in 2023 confirmed that Zero Zero Bottles reduce colic, help prevent baby from swallowing air, help prevent reflux & ear infections. Suitable for low birth weight and premature babies with weaker suck strength MADE BY THE No. 1 SPANISH BABY BOTTLE BRAND*: Suavinex designs and manufactures this anti-colic bottle in Spain, offering brand leadership and local production that provide parents with trusted feeding essentials from newborn through toddler years (*In Spanish pharmacies, data Infonis 12/25, Spain.) Introducing the Zerø.Zerø Anti-Colic Bottle, proudly brought to you by Suavinex, the #1 Spanish bottle brand that has been beloved by parents for over 40 years. Designed and made in Spain, the Zerø.Zerø bottle stands for zero colic, zero nipple confusion. Uniquely designed with a patented, medical-grade silicone bag nestled within the bottle’s body, an asymmetrical adaptive flow nipple and skin-tone inspired nipple shades, the Zerø.Zerø bottle was meticulously engineered to minimize colic, all while ensuring a seamless transition between breast and bottle feeding with the least amount of confusion. For a successful feed, traditional baby bottles necessitate anti-colic valves, specific positioning, making sure the nipple is only half-filled with milk or formula, and frequent burping. Our adjustable flow nipple empowers your baby to take charge of their milk delivery, replicating the natural breastfeeding process. No matter the bottle's angle, even when upside down, milk only flows when your baby sucks, mirroring the gentle pull of breastfeeding. The uniquely designed asymmetrical nipple, featuring a strategically placed off-center nipple vent, allows your baby to regulate milk flow as they grow. As their suck becomes stronger with age, they’ll effortlessly extract more milk, just as nature intended. The bottle nipple's shape and length are carefully crafted to match the placement of a mother's nipple on a baby's soft palate during breastfeeding. Additionally, our patented internal silicone bag collapses as your baby sucks, ensuring the most natural feeding experience while reducing the intake of unwanted air. This innovative design significantly minimizes the likelihood of colic and indigestion. Babies perceive the world in shades during their earliest days. That's why our Zerø.Zerø Bottle comes in a range of skin-tone-inspired hues, enhancing the visual connection between the bottle and your baby.