I purchased these about a year ago. They are Pigeon breast milk freezer bags. I bought a pack of 20 bags, 40ml each, and used 5 of them for my daughter when she was in the hospital. Now that she has weaned, I'm getting rid of these. The stickers to write the date and amount of expressed milk are all unused (20 stickers). They can be frozen or refrigerated. They can be frozen for 3 months. They can be refrigerated for 24 hours. I will fold the box and include it in the envelope. Please note that I cannot send the box unfolded. Multiple purchases are welcome! #Pigeon #pigeon #freezing #breastmilk #breastmilkfreeserbag #freezerbag #milk #breastfeeding #baby #babygoods