Pigeon Breast Milk Freezer Packs Breast milk storage packs for freezing and refrigeration. 40ml, 20 packs in a box. 2 packs have been used, so there are 18 remaining. Purchased in 2020. 20ml packs, 10 in total, have never been used. I believe these were samples received around 2022. The 40ml packs may be slightly different from the current design. The bottom part is different from the 20ml packs... I didn't use them much, so I'm not sure of the exact differences. If you are okay with this, please consider purchasing. Please understand that these have been stored at home. When shipping, I will take the packs out of the box and fold the box for shipping.