The Similac Simply Smart Baby Bottles 4 Oz. with Level 1 Nipples are designed for newborn babies from 0 months old. These bottles feature a soft and wide silicone nipple for easy latching and feeding. The bottles are microwave and dishwasher safe, made of plastic material, and have a 125ml / 4oz capacity. The slow flow nipple design ensures that the baby drinks at a comfortable pace while the wide neck bottle makes it easy to clean and fill. With a cute blue color design, these baby bottles are a convenient and safe option for parents looking to feed their little ones.