Price negotiations are welcome. Please use the comment section. *Please offer a reasonable price. This is a FLYER'S backpack created by Koichi Yamaguchi, a leading Japanese bag designer who created masterpieces such as the "Tanker" series for "Yoshida Kaban," known for PORTER, when he was at "HARVEST LABEL." The main body fabric uses "high-density nylon twill" faithfully woven by The Real McCoy's according to the MIL spec of the US Air Force's MA-1 (MIL-J-8279), offering excellent "durability," "moisture retention," and "abrasion resistance," as well as being resistant to water such as rain, providing long-lasting functionality. The sophisticated design of the backpack incorporates a "storm flap" (windbreak) inside the top zipper of the main body to prevent water penetration and theft. The main compartment has a considerable capacity, and the zipper extends to the bottom, allowing for excellent visibility. It is also packed with "hidden pockets" unique to Koichi Yamaguchi's design. In addition, the interior also uses the "outer fabric," allowing you to experience a "genuine MA-1 bag." [Made in Japan] Sewing by skilled craftsmen. CONMAR zippers for the top zip and two front side zips. SCOVILL zipper installed on the side long zip. [Size] Approximately 38cm (H) x 24cm (W) x 11cm (D) It is a beautiful item that has been carefully stored with almost no use since it was purchased new about 30 years ago. It is rarely seen even online. Even if you do find it, it's often shoulder bags, and this backpack is very rare. This is a hard-to-find, exceptional "Koichi Yamaguchi vintage" model that rarely appears. REAL MCCOYS HARVEST LABEL PORTER DENIME BURGUS PLUS Buzz Rickson's Toyo Enterprises SUGAR CANE EVISU Full Count UES COLIMBO SAMURAI JEANS Dry Bones SUGAR CANE Jelado TOYS McCOY COLIMBO The REAL McCOY'S SAMURAI JEANS Hellers Cafe Momotaro Jeans Deluxe Wear Pherrows Setagaya Base FREEWHEELERS