| These containers are tops! You can pump right into them, with the Avent Isis Pump, which is great, or with most other pumps (with the converter piece). Then just stick the container in the freezer. Exchange the sealing disc for a nipple and, presto, it's a bottle. Add a handle and a spout instead of the nipple - it's a sippy cup. And it is safe to use in the microwave. And it does not leak, even when it's not upright! And, thanks to the wide mouth, it's easy to clean. The small size makes it easy to store, minimizes waste (very important when using breastmilk) and - for those who care - these containers are actually aesthetically pleasing. I am very happy that I chose Avent bottles - they are well worth the extra money, as after six months of use they still look brand-new. And if you ever need it, Avent customer service is even better! |