Dr. Brown's Natural Flow Bottles 5-Pack Set - white, one size

Polypropylene, Silicone Made in USA or Imported Positive-pressure flow for vacuum-free feeding that is similar to breastfeeding Reduces feeding problems like colic, spit-up, burping and gas Vent system that removes air from milk maintains essential vitamins such as C, A and E Helps prevent fluid in the ear. Controlled flow so babies feed at their own pace. Made of plastic BPA, PVC, lead and phthalate free