Newborn Baby Bottle (Medium Flow)Specifications:- Carrying the triangle No. (5) as it is made of "polypropylene" means that it is one of the best types of plastic and the safest.- Free from harmful chemical Bisphenol A or BPA.- Made of standard safe silicone material.- Carries a digital gradient of millimeter to determine the right amount of liquid.Features:- Positive flow of effortless feeding for a ventilation system that removes air from milk.- Reduces nutrition problems such as colic, spit, belching and gases in the child.- Easy to handle, lightweight, with a sealed lid.- The material is resistant to breakage and washable.