Our items are 100 % authentic. In house appraiser will check the authenticity of all of our items and some items comes with the receipt but most of them don't. We have been doing this business for years in Japan and have real store as well.So we are confident our items are 100% authentic. Please notice your measurements are scaled by our staffs. Please allow us some errors. Authenticity: Everything we sell is guaranteed authentic. Our professional appraisers inspect every item multiple times before it is listed. Duty is charged from goverment on each item imported into the country. Please make sure to write "RETURN-CARGO" on the package when you are sending back the item. And send back the item using via POST OFFICE.