I purchased this for my son who has bedwetting issues, but I am selling it because I bought a different product. This item is new and unopened. Please do not purchase this based on the size of your child's commercially available size 150 pants. Be sure to measure and refer to the size chart in image 4 when purchasing. It does not stretch as much as commercially available size 150 pants. It cost 3300 yen at the time of purchase.