snoozzz Snooze Baby Rollover Prevention Belt Regular Size Purchased on Amazon for the regular price of 5000 yen. Unused. I intended to use it, so I threw away the box, but I haven't used it. I bought two in preparation for childbirth, and I was using the other one. (This one is unused.) I was worried about SIDS, so I used a rollover prevention sensor, but this belt, which physically prevents rolling over, gave me a great sense of security, and I, as a parent, was able to sleep soundly. I will ship it compactly. Good sleep, sound sleep