Otona Randosel Primärfunktion: Rucksack by Tsuchiya Kaban Co., Ltd.

Platin Accessoire · 2026

Otona Randosel Primärfunktion: Rucksack

by Tsuchiya Kaban Co., Ltd.

A' Design Award in Platin 2026 in Accessoire
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

Colors

About Otona Randosel Primärfunktion: Rucksack

Buchtext: Dieser Rucksack interpretiert den traditionellen japanischen Randoseru für den täglichen Gebrauch neu. Durch das Entfernen seiner charakteristischen Klappe entsteht eine Silhouette, die aus geraden Linien und Kurven besteht. Das ergonomische Rückenteil ist so gestaltet, dass es Halt bietet und gleichzeitig ein formelles Erscheinungsbild bewahrt. Das Äußere wird durch den Verzicht auf Taschen vereinfacht, und die Öffnung wurde für einen einfachen Zugang neu gestaltet. Dieser Rucksack zielt darauf ab, Form mit praktischem Nutzen in Einklang zu bringen.

About the A' Design Award in Platin

Otona Randosel Primärfunktion: Rucksack ist Gewinner des A' Design Award in Platin, einer überaus prestigeträchtigen Anerkennung für wahrhaft außergewöhnliche, elegante und prachtvolle Designs. Platin-Gewinner sind Wunderwerke der Schöpfung, Zeugnisse der Grenzen intellektueller Kreativität und zeigen die unübertroffene Professionalität und Genialität ihrer Designer. Von diesen Designs wird erwartet, dass sie die renommiertesten Werke sind, die die Ästhetik einer Epoche prägen, zum Wohlergehen der Gesellschaft beitragen und die Grenzen von Kunst, Wissenschaft, Design und Technologie voranbringen. Otona Randosel Primärfunktion: Rucksack weist ein transzendentes Maß an Exzellenz auf und macht die Welt mit seinen vorteilhaften und wertvollen Eigenschaften unmissverständlich zu einem besseren Ort. Otona Randosel Primärfunktion: Rucksack ist ein mit dem A' Design Award in Platin prämiertes Werk, das Wünsche weckt, inspiriert, begeistert, erfreut und große Freude entfacht.

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.