G2G's 5 oz regular 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 in 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). * Green to Grow bottles have been awarded 2008 PTPA Media Award!