Plz forgive me but I am really clueless when it comes to bp storage. I feed my dd till she was 2.5 but never pumped. I have a month old dd now and she is in and out of the hospital so I must pump w/ this one for when we are in the hospital because they measure everything going in and coming out. So I am pumping 2 - 4oz bottles extra a day. I am out of the bottles they gave us at the hospital and wont be back up there for another 20 days. I am not really loving pumping into medula bags. So what other bottles can I pump and freeze in? Do they need to say for breast milk freezer storage? Why is the storage longer in a deep freeze than a side freezer? Thanks!