Otona Randosel Función principal: Mochila by Tsuchiya Kaban Co., Ltd.

Platino Accesorio · 2026

Otona Randosel Función principal: Mochila

by Tsuchiya Kaban Co., Ltd.

A' Design Award de Platino 2026 in Accesorio
CLIENT: Tsuchiya Kaban Co., Ltd.
Estimated Number of Design Views: 924,743
Verification code C8FCD5BD73 · Verify this award

Visit Site View at A' Design Award Press Release

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About Otona Randosel Función principal: Mochila

Texto del libro: Esta mochila reinventa el tradicional Randoseru japonés para el uso diario. Al eliminar su característica solapa, el diseño presenta una silueta compuesta por líneas rectas y curvas. El panel trasero ergonómico está estructurado para brindar soporte mientras mantiene una apariencia formal. El exterior se simplifica al eliminar los bolsillos, y la abertura se rediseña para facilitar el acceso. Esta mochila busca equilibrar la forma con la utilidad práctica.

About the A' Design Award de Platino

Otona Randosel Función principal: Mochila ha ganado el A' Design Award de Platino, un reconocimiento sumamente prestigioso concedido a diseños verdaderamente excepcionales, elegantes y magníficos. Los ganadores de Platino son maravillas de la creación, testimonios de los límites de la creatividad intelectual, y demuestran el profesionalismo y el genio inigualables de sus diseñadores. Se espera que estos diseños sean las obras más renombradas, que definen la estética de una época, contribuyen al bienestar de la sociedad y amplían las fronteras del arte, la ciencia, el diseño y la tecnología. Otona Randosel Función principal: Mochila exhibe un nivel trascendente de excelencia y, sin lugar a dudas, hace del mundo un lugar mejor con sus características ventajosas y valiosas. Otona Randosel Función principal: Mochila es una obra ganadora del A' Design Award de Platino que despierta deseos, inspira, entusiasma, deleita y provoca una gran alegría.

Press Kit

Unique Properties: Reimagining Randosel features for modern daily life.
This backpack reconstructs the "beauty of straight lines and curves" unique to Japanese Randosel. By removing the iconic flap, we achieved a minimalist silhouette defined by clean lines. Ergonomic curves on the back ensure comfort, balancing formal tension with utility. We eliminated external pockets to increase purity while redesigning the opening for smoother access. Disciplined beauty and modern convenience are highly fused.
Dimensions & Packaging: Size: H 410 × W 295 × D 120 mm
Shoulder Strap Length: 670-880 mm (7-level adjustment)
Handle Height: 35 mm
Tags: RANDOSEL, Backpack, Leather, Japan, Minimalist, Craftsmanship, Repairable
Production Technology: We developed a unique magnet for smooth operation and secure closure. Based on children’s Randosels-curves, we tested 4 shapes and 3 lengths, refining the fit through trials with over a dozen people. We also inherited the "soft touch" technique of Randosel by slightly extending the side cushioning.
For the lower back, a three-layer sponge supports weight on the hips. By incorporating the traditional airflow channel design into the back panel, we significantly improved daily comfort.
Design Challenge: Our challenge was to overturn the stereotype of "RANDOSEL equals a children’s bag" by reinterpreting it as a backpack with formal dignity. We achieved refined form and rational structure by fusing our founding Randosel techniques with top-tier craft, such as Dulles bag manufacturing and repair expertise. Working closely with our craft people, we thoroughly examined core materials, hardware, and aging quality, completing a unique product that integrates safety and durability with beauty.
Research: Inheriting and updating design and technology rooted in the Randosel.

Since our founding in 1965, we have inherited our craft while updating it for modern life. We thoroughly examined structure and specifications, focusing on flap operation, formal refinement, and carrying comfort. Beyond aesthetics, we pursued practical weight reduction and accessibility. Staying true to our brand spirit, we optimized the "OTONA RANDSEL" for daily use, achieving a fusion of beauty and functionality.
Inspiration: This project is based on the craftsmanship of the "RANDOSEL"-a traditional Japanese school bag-honed since our founding in 1965. We reconstructed the model launched for our 50th anniversary, evolving it into a backpack for a modern daily lifestyle. While inheriting the elegance, carrying comfort, and robust box-shaped structure, we pursued refined functional beauty to create an iconic model to be appreciated not only in Japan but also in the international market.
Project Duration: Started in July 2019 at Tsuchiya Kaban in Tokyo. Mass production was completed at the Tsuchiya Kaban workshop in June 2023, marking the end of the project. It is currently not for sale.
Operation Flow: Elevating the backpack into a dignified form suitable for formal settings.
By reinterpreting the Randosel’s neat structural beauty, we elevated the casual backpack into a dignified form. We added asymmetrical details to the orderly boxy form to create a presence that stands out in daily life. With center-of-gravity design and structure, we balanced a beautiful silhouette with high-performance comfort. This new commuter backpack integrates casual style and dignity, enhancing the wearer’s posture.