The Evenflo-Pack Classic Standard Neck Baby Bottles are a set of three 8-ounce bottles with soft silicone nipples, designed for babies starting from 0 months old. These bottles feature unique twist shapes for easy handling and comfort, along with silicone nipples with micro air vents to prevent nipple collapse. The bottles are made of tempered glass, which is recyclable and safe for the environment. With a slow flow nipple and BPA-free plastic materials, these baby bottles provide a sustainable and secure option for feeding your little one.