philips avent scf618/10 breast milk storage starter set makes breast milk storage and feeding easier by eliminating the need to transfer milk. attach a 6 ounce storage container to your breast pump and express directly into the container. cover with leak proof lid and then store in refrigerator or freezer. simply replace the sealing disc with a nipple for easy feeding - no need to transfer milk from container to bottle. all philips avent nipples and spouts can be used with the storage containers. dishwasher safe.