The Dr. Brown's Options Glass Bottle Sleeve is a protective cover designed for 9 oz / 270 ml wide-neck glass baby bottles. Made from 100% silicone, this sleeve not only provides a secure grip but also helps prevent bottle breakage and reduces heat transfer. Its vibrant blue color adds a fun touch while ensuring that your baby's bottle remains safe and easy to handle. This sleeve is dishwasher safe, making it convenient for cleaning and maintenance.