COMPLETE COMPATIBILITY: Tailored to work seamlessly with all Medela pumps that come with bottles, ensuring a hassle-free and convenient expression of breast milk directly into the bottles EFFORTLESS CLEANING AND SANITISING: These bottles are designed to withstand the rigours of modern life – easily cleaned in the dishwasher and can be safely sanitised using our Quick Clean Microwave EASY-TO-READ VOLUME MONITORING: Accurately measure and track the amount of expressed breast milk with the vibrant and clear ounce and milliliter markers on each bottle, providing confidence and assurance in your breast milk storage SECURE AND LEAK-PROOF STORAGE: Equipped with versatile caps, these bottles offer a leak-proof seal when closed, making them perfect for storage, travel, and freezing MADE WITHOUT BPA FOR PEACE OF MIND: Medela prioritises the safety of both mothers and babies – Medela's breast milk bottles are crafted without any harmful BPA, ensuring your peace of mind during every expression