
Glass-bottle users don’t have to worry about chemicals leaching into milk, but they do often worry about dropping and shattering bottles. While nothing can prevent that, you can opt for different kinds of glass. Coddletime offers borosilicate glass bottles, which are made of the same temperature-resistant glass used in lab equipment and cooking glassware like Pyrex. Each 9-ounce bottle ($10.49) comes with a Stage 1 nipple and silicone sleeve to help prevent scratches and slips.