Model Number: YLA-BS02 Brand Name: YLA Key Specifications/Special Features: Innovative 4-ounce (120ml) glass baby bottle with protective silicone sleeve, Stage 1 silicone nipple for newborn infants from 0 to 3-month and polypropylene (PP#5) cap, ring and stopperThermal shock resistant borosilicate glass bottle transitions safely from freezer to boiling water, all components are dishwasher safe, sleeve and bottle can be washed/sterilized togetherProtective medical-grade silicone sleeve provides a tactile non-slip gripping surface and helps prevent breakageBottle grows with baby--use with Lifefactory stage 1, 2, 3 and Y-cut nipples, sippy caps and leak-proof flat caps, compatible with most major breast pumpsHealthy alternative to plastic bottle feeding--all components are made in the U.S. or Europe and are BPA/BPS-free and phthalate-free