BPA Free Green to Grow Baby Bottle - 5 oz Wide Neck Our 5 oz wide neck baby bottles are made from PES plastic, which gives them a natural golden color. They are free of phthalates and free of bisphenol A a suspected hormone-disrupting chemical used in polycarbonate plastic, from which most baby bottles are made. Bottles are tested i n the U.S. to ensure they meet the highest standards for quality and safety Free of lead and PVC Includes a Beginner (slow flow, 0-3 months) nitrosamine-free silicone nipple 100% recycled packaging Dishwasher safe (top rack)