The POTATO Glass Baby Bottles are designed for safety and comfort, made from food-grade borosilicate glass that is free from harmful chemicals. These bottles feature a wide shape silicone nipple that mimics breastfeeding, promoting proper latching and making it easy for babies to switch between breast and bottle. The anti-colic design helps prevent excessive gas, allowing for a smooth feeding experience. With a capacity of 6 ounces and two medium flow nipples included, these bottles are perfect for babies aged 3 to 6 months. They are easy to clean, as they can be disassembled into a few pieces, making them more hygienic than plastic alternatives.