The patented EasyPour milk bag makes pumping more convenient than ever and is Medela's most innovative milk storage solution ever. Its unique design allows for one-handed pouring and provides 10 times better protection for your precious milk. Easy Pour milk storage bags allow you to store freshly expressed milk in the freezer or fridge. A resealable carry bag is included to keep the bags clean and tidy. Protects the nutrients of your breast milk: The bags have an ultra-thick double layer with an excellent oxygen barrier that provides 10 times better protection for your breast milk compared to previous bags. Freeze flat and cut yourself: Save space in your freezer by stacking flat, while the self-standing function makes it convenient for short-term storage in the fridge. Plus, these bags offer dual use, suitable for short-term and long-term storage. Ready to use, they are sanitized and convenient for storage or travel. They are recyclable and BPA-free.