Pippeta Breast Milk Storage Bags - 30 PackLeak proof, seal bags suitable for storing in the fridge or freezer. Pre sterilised. BPA free. Up to 200ml of breast milk. Storage Stored breast milk may separate into layers. Swirl storage bag gently to thoroughly mix breast milk prior to offering to your baby. Refrigerated up to 4C 32 39F: Optimal storage 3 days maximum 5 days. Frozen: Optimal storage 4 months maximum 6 months. Safety Warning Caution Once defrosted, use breast milk immediately.