Malish Save n Go Double Zip-Lock Breast Milk Storage Bag is a medical grade sterilized double zip lock bag that is ready for immediate use. It is leak proof with double zip-locks to prevent splitting. It is made of BPA free & non-toxic material. Malish Double Zip-Lock Breast Milk Storage Bag 4oz comes in different designed which is Carrot & Lemon to meet mother’s desire to get cute milk bag design for their baby.