This Farlin Feeding Bottle comes with a feeding bottle with a wide neck. The narrower waist in it fits more securely in hands. The bottles are colorfully designed. The bottleneck has a smooth inner surface making it easier to clean and will not retain milk and dust particles. Air valve design on the base of the nipple allows for a constant flow of liquid and less ingestion of air. It is made from top-quality glass material which is non-toxic, boil-able, and dish-washersafe. Wide-bore feeding bottle makes it easy for you to load milk powder and convenient for washing clean.