Thank you for viewing. I purchased this a few years ago and have only used it a few times. There are stains, paint peeling, and tears (on the back) due to aging. Also, the sponge has hardened. Functionally, it still works fine and can still be used. If you don't mind, please consider purchasing. There is no box or instruction manual. Compact abdominal training device, enabling efficient exercise. - Model Name: Smart Wonder Core - Color: Black/Green - Features: Abdominal training device - Material: Plastic/Rubber - Size: Compact design ⚫︎Please check the images carefully for details of scratches, etc. Cancellations and returns are not accepted after receipt. Please be sure to inquire before purchasing if you have any concerns. ⚫︎Because I am taking pictures with my smartphone, there may be differences in color, etc., from the actual product. Please understand this beforehand. ⚫︎To prevent trouble, I do not offer exclusive sales or holds. I will prioritize and respond to those who have purchased. If you can pick it up in person, I will consider a discount. Osaka City Do you know Jimoty?