Developed with Pediatric Feeding Specialists the Evenflo Feeding Balance + Nipple is designed to support healthy bottle feeding without interfering with your breastfeeding journey. The unique naturally-sloped nipple promotes a healthy wide latch for your baby by providing a proper resting place for their lips helping to decrease mouth fatigue. The effective 1-piece integrated vent helps prevent colic gas and fussiness with no extra parts to clean or lose. The slower flow rate helps prevent chugging allowing for a calm gulp-free feeding at baby’s pace. Evenflo Feeding nipples are 100% free of BPA polycarbonates PVC and phthalates and are also made of FDA-approved food grade material.