Thank you for viewing. This is a guaranteed authentic product. I purchased it in the United States for $38, so this price is relatively reasonable. Please be aware that excessively cheap products, like some others, are likely to be fake. Fake products have characteristics such as: ・Unnatural lines in the fabric ・Thin fabric, making it difficult to function as a balaclava This is an authentic Nike Pro Therma-FIT Hood (Black). While significant price reductions are difficult due to shipping and handling fees, please feel free to comment if you have any questions. *If you want the box, it will be an additional 1,000 yen due to shipping costs. *Returns are not accepted to prevent product substitution.