All babies deserve a healthy start. Reduce exposure to plastics and ensure purity with Lifefactory Glass Baby Bottles. Lifefactory reinvents the glass bottle your grandmother used with a patented silicone sleeve that offers a tactile gripping surface for little hands and helps protect against the occasional drop. Made of the highest quality, thermal shock resistant borosilicate glass from France, Lifefactory bottles transition safely from freezer to boiling water. Bottle and silicone sleeve can be washed and sterilised together. All nipple components are top-rack dishwasher safe. The 4-ounce (120 ml) bottle comes with a Stage 1 silicone nipple for newborn infants from 0 to 3-months and a polypropylene (PP#5) cap, ring and stopper. Lifefactory Glass Bottles grow with your baby--they can be used with the range of Lifefactory nipples, sippy caps and leak-proof flat caps--providing years of use. . All caps can also be used with Lifefactory 9-ounce bottles. While very durable, Lifefactory bottles are still glass and are not unbreakable. Replacement bottles are available. All Lifefactory bottle components are made in the U.S. or Europe. All materials are BPA/BPS-free and phthalate-free. Lifefactory's glass baby bottles are bisphenol-A (BPA), phthalate, and polyvinyl chloride (PVC) free.