The Green to Grow Welcome Home Set has everything you need to start nourishing your new baby with confidence. Green to Grow BPA Free baby bottles 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. Green to Grows silicone nipples are made from a transparent, medical grade silicone that is heat-resistant, non-toxic, and odorless. The nipples are free of nitrosamines, a potentially harmful contaminant found in many rubber nipples. This set includes: Two 5 oz, wide neck bottles, Two 10 oz wide neck bottles, one package of 3 intermediate wide neck nipples (3 to 6 months), one package of 3 expert wide neck nipples (6+ months) and one organic baby burp cloth.