I purchased this for 12,000 yen. I used it a few times, and it was very easy to use! I'm selling it because I bought another bag. The inner pockets fit baby bottles, water bottles, and diapers! I could also fit changes of clothes and a baby food set in between, so it has a large capacity. I thought the bag itself was light, so it was less of a burden. As you can see in the fourth photo, there is some discoloration on the metal fittings. Please refrain from purchasing if you are concerned about this.