is releasing the official “YOSHIDA & Co. 90 Anniversary BOOK” Library Edition, commemorating the 90th anniversary of Yoshida & Co., the company behind PORTER bags.

This book features content focusing on PORTER’s activities over the past 10 years. It includes behind-the-scenes looks at the craftsmanship through the ALL NEW TANKER project, images from the 2025 exhibition “Every day is a new beginning,” historical materials related to the founder, and interviews with the brand director.
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The book also incorporates the “craftsman’s spirit” that symbolizes PORTER into the book-making process itself. Traditional Japanese “watoji (和綴じ)” binding, a technique that involves stitching sheets of paper together with thread, was used for the binding. The actual thread used in the production is the same type of thread used to make PORTER bags.
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The extensive 248-page volume, including the use of benchwork craftsmanship, was painstakingly assembled piece by piece. The process itself embodies the PORTER philosophy of “Ichi-seki-ippin” (一針一品) — putting care and craftsmanship into every single stitch and every single piece.
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The Library Edition is specially made with a thick board cover wrapped in cross-grain material, giving it excellent durability and making it suitable for storing on a bookshelf. The cover also features foil stamping, emphasizing the presence and identity of PORTER.
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