Gerber good start gentle concentrate formula, the first liquid infant formula in BPA - free tetra packaging. Gerber good start gentle concentrate has an improved, easy to open carton. Convenient pull-tab top. Easy to handle and use - simply pour, mix and feed. Carton made without BPA. 69% less packaging by weight and 15% less post-consumer landfill waste. For babies 0-12 months. Milk based concentrated liquid. Must add water.