This is the summary of consumer reviews for Dr. Brown's Natural Flow Standard Glass Bottles. The BoolPool rating for this product is Very Good, with 4.30 stars, and the price range is $9.71-$14.99 (For Pack of 2).

The Dr. Brown's Natural Flow Standard Glass Bottles gives the experience of breast-like feeding to babies. The 4 oz and 8 oz glass bottles feature the well working, patented 2-piece internal vent system. This system vents out the baby bottle so that it is free from vacuum. Using this vented baby bottles for your baby helps you to minimize ingestion of air bubbles, gas, colic, and burping. The glass feeding bottles are easy to clean and maintain. Dr. Brown's Natural Flow Standard Glass Bottles comes with slow flow nipple perfect for transitioning babies. Also the nipple is very comfortable and stays inflated. These bottles warm up very fast and are also BPA, PVC, lead and phthalate free.

However, many user reviews complain that these glass bottles may break in bottle warmer. Also the neck of the bottle is really narrow thus making it hard to mix formula in the bottle.

Overall, the Dr. Brown's Natural Flow Standard Glass Bottles are highly rated and recommended by parents for a wonderful feeding experience with innovative vent technology.