This is a second-hand user. I was able to confirm that the baby was drinking well until about 3 months old, which was reassuring. It can be used without any problems. With extras, the inner bag is unopened. I've used a few breast milk storage bags, but there are still plenty left. Please consider them as extras. (I will take them out of the box if shipping.) If you can pick it up in Fukushima-ku, Osaka City, I will sell it for 2000 yen. For shipping, I will wrap it in cushioning material and ship it in simple eco-friendly packaging.