The Tips: The baby bottle silicone sleeve is compatible with Dr. Brown's Glass baby Bottles 8 oz/240 ml, (Other series products cannot be adapted) | Food Grade Silicone - Silicone Baby Bottle Sleeves is made of food grade silicone,no chemical additives and BPA free, which is safe to use. The baby bottle sleeves use of anti-stick silicone material and unique shape design, will not stick to the dust，hairiness,etc, which make it safer and more secure for you to use | Unique Designed for Baby Bottles - The silicone sleeves for Dr. Brown's Baby Bottles can against drop down,bumps and scratches. These are a must essential product for using glass baby bottles. They provide a more sturdy protection for glass baby bottle from breaking if dropped, which also unique handle design shape make it easier to grip and hold | Thermal Insulation & Maintain Liquid Temperature - The silicone baby bottle sleeves for Dr. Brown's natural bottles also help insulate the glass bottle, easy to removal from in the heater, and maintain the temperature of the milk longer | Comfortably Use of Bottles - The fashion design silicone sleeve for Newborn baby bottles help grip for mom and also helps baby hold his bottle when it comes time for them to hold it . These bottle handles can be used for clean by dishwashers ,easy to clean.The silicone sleeve for Dr. Brown's bottle comes in cute colors and an adorable little cut out, so that you can easy to know amount of milk left