Evenflo’s reusable glass baby bottles are eco-friendly and ideal for an eco-conscious parent who is looking for an alternative to plastic. Each bottle comes with a silicone-made slow-flow nipples and crystal clear, making it easy to view milk or formula. Additionally, these eco-friendly baby bottles have Micro Air Vents™ that help to prevent or reduce nipple collapse and minimize air ingestion. For over 90 years, Evenflo has nurtured babies" growth and development. We understand the importance of the connections developed between parent and baby during feeding time. Evenflo"s Glass Bottles provide superior sanitizing, recycling and sustainability. Includes: 6 - 8oz glass bottles.