Our baby bottles are made from the highest quality thermal shock-resistant borosilicate glass, which allows the bottles to transition safely from freezer to boiling water. They are BPA/BPS-free and phthalate-free, made with all FDA-approved materials and come with a polypropylene (PP#5) cap, ring and stopper, and stage 1 (0-3 mos) silicone nipple. The bottle is wrapped in a protective, medical grade silicone sleeve for a no-slip grip and to help prevent breakage. Everything is dishwasher safe.
Before first use, place in dishwasher or in boiling water for 3 minutes. This is to ensure hygiene. Immediately after use, disassemble individual top components (e.g. nipple from top or valve from cap). All parts are dishwasher safe (top rack only).
To wash by hand: wash separately in hot, soapy water and rinse thoroughly. Bottle and sleeve may be placed in the dishwasher or boiled without removal of the sleeve. If you wish to remove the sleeve, it comes off best in warm, soapy water. To allow venting and prevent nipple/valve collapse, do not overtighten screw top.