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, theyll 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. Babies perceive the world in shades during their earliest days. That\'s why our Zer.Zer collection comes in a range of skin-tone-inspired hues, enhancing the visual connection between the bottle and your baby, fostering a more natural and harmonious feeding experience that goes one step further to help minimize bottle rejection and nipple confusion while mixed breast & bottle feeding. The 1 anti-colic bottle in Spain, the Zer.Zer range promotes a peaceful and natural feeding journey for baby, free from discomfort and confusion. Created to make bottle feeding feel as close to breastfeeding as possible for the baby, it\'s a testament to the harmony between innovation and nature, allowing all family members and loved ones to participate in the feeding experience, without straying from the breastfeeding path. Consistency is key, and that is why our Zer.Zer bottle is designed with the same nipple shape, shade and feel as the Zer.Zer pacifier, reinforcing the consistency of switching seamlessly between breast, bottle, and pacifier. The Zer.Zer bottle and pacifier are designed as a seamless system to reduce nipple confusion by promoting a consistent experience for baby.