Evenflo Balance + Standard Fast Flow Nipples- Set Of 6

I ordered these standard size by mistake when I needed the wide. I ripped the box open before realizing they were the wrong size. The nipples are still sealed in the original plastic. From the website: Description Developed with Pediatric Feeding Specialists, the Evenflo Feeding Balance + Standard Neck 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. The Balance + Standard Neck Nipple is compatible with the Balance + Standard Neck Bottle. Evenflo Feeding nipples are 100% free of BPA, polycarbonates, PVC and phthalates, and are also made of FDA-approved food grade material.