I bought this at Actus for about 3000 yen and it's been sitting in a drawer ever since. It's a baby bottle water bottle. My son doesn't like straws... This water bottle only dispenses a little bit at a time, so he only used it a few times before it went into the drawer. It's recommended for those who don't want their child to gulp down their drink. You drink from the protruding part at the top. Press the red part to make the protrusion appear. It's quite old, so it might be discontinued. I was going to list it as a set with a lunch box, but my son likes the lunch box, so I'll list it another time.