Main product description Silicone Cap for Dr. Browns Wide Neck Bottle. Suitable for 270ml wide mouth glass bottles. BPA free. To protect the glass, to handle and hold the glass better. Various pastel colors.Mode of use Place on a bottle as needed. Silicone material suitable for everyday use. It can be cleaned easily, even in the dishwasher. Notice: The silicone cap is designed to protect Dr.Brown glass bottles, but cannot prevent all cases of breakage. Be sure to read all the instructions on the leaflet that came with your Dr.Browns glass bottle.