Pigeon Breast Milk Storage Bags offer hygienic storage with gamma ray pre-sterilization and secure seal. BPA/BPS free, ideal for fridge or freezer storage. Key Features Leak-proof with thick and durable material Self-standing bag allows easy filling and handling Double zipper seal for ultimate protection Pre-sterilization with gamma rays for hygienic storage BPA/BPS free Easy tear-off line for convenience Available in 180ml 5 assorted designs Key Materials: Pre sterilized, durable polyethylene film (BPA/BPS Free); Double zipper seal; Labeling tab (for date/volume).Leading baby care brand from Japan, specializing in innovative and hygienic breast milk storage solutions.Freeze Flat & Stack To Maximize Space In Freezer.Do Not Heat In Microwave Or Stove.