Evenflo Zoo Friends bottles and nipples provides a complete line of feeding solutions for your baby's changing needs. The Evenflo Zoo Friends bottles Bottles feature a Classic Slow Flow soft silicone nipple, featuring Micro Air Vents™ to help prevent nipple collapse and promote a more comfortable feeding experience. Rest assured, our bottles are 100% free of BPA, polycarbonates, PVC and phthalates, and are also made of FDA approved food grade material. Fun, colorful baby Zoo Friends will make mealtime come to life.