* Eco-Friendly Baby Bottle * Contains Two Bottles with Level 1 Nipples * Safe for Your Baby. Safe for Mother Earth. * Eco Classic * Babies Know Best * Free from BPA Phthalates & PVC * Recommended by: Dr. Greene Designed to reduce colic, gas and spit up * Babies control milk flow - like nature intended ActiveFlow Nature in the Hands of your Baby ActiveFlow bottles feature a silicone valve that allows milk to flow only when a baby suckles and lets babies control milk flow according to their changing needs - like breastfeeding. In addition, a patented venting system reduces pressure during feeding and is designed to help ease painful colic symptoms. Soft Silicone Nipples * Available in 5 flow rates from Newborn to 18 months. Designed to Help Ease Colic Symptoms * Silicone valve minimizes air ingestion and helps reduce gas and spit up. Ideal for Breast and Bottle Combination * Milk flow begins only when baby suckles. * Flow rate controlled by baby - just like breastfeeding. Long Lasting Safe Plastic * Eco-friendly, 100% free of BPA, phthalates and PVC. Top rack dishwasher safe. No leaks Microwave safe.