- Polypropylene bottles are BPA Free
- Patented internal vent system created by Dr. Craig Brown eliminates the vacuum and air bubbles to help significantly reduce colic, spit-up, burping and gas
- Fits all of the existing Dr. Brown's standard nipples
- Works with all of the existing Dr. Brown's convenience accessories including microwave sterilizer, drying rack and dishwasher basket
- 8-ounce standard size