Shop Japan Wonder Core Smart ★ Operation confirmed, but this is a used item. Please review the photos for scratches and stains before considering a purchase. ★ Some stains are present on the sponge, and it has hardened due to aging. It is still usable and does not affect the operation. You can rest assured that there will be no pain during training. ★ The instruction manual is bent as shown in the photo. It will be shipped either folded and placed in a cardboard box, or wrapped in bubble wrap with the shipping label attached. Please note that the packaging method is still undecided.