Grow Healthy Grow Happy Stage 3-4 Free of BPA and PVC! Turns Water Bottle Into Sippy Cup Fits Most Disposable Water Bottles Water Bottle Cap Adapter Nitrosamine free, heat resistant spout Removable spout for easy cleaning Collar flips to fit 2 standard bottle sizes Green Sprouts products meet FDA, CPSIA and ASTM F963 safety standards for the US.