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The Purple Show

The Bag Buoy

A 3D-printed wearable buoy, largely inspired by Mediterranean landscapes, featuring an innovative screw-threaded mechanism

Red terracotta bag-buoy worn — © Mathias Blanc

Inspired by coastal sea buoys, Bag-buoy translates childhood maritime memories into a functional, bio-based 3D-printed accessory. Designed with an embedded screw thread, it offers a seamless shell free of zippers or hardware.

Rethinking a universal object

Rooted in Mediterranean memories, the yellow lozenge buoys floating off the seashore of Cadaqués in Catalonia were the initial inspiration for this object. After measuring the proportions of these original buoys, a digital shell was 3D-modeled. The project’s core innovation lies in its mechanical engineering. By integrating a screw thread directly into the 3D-shaped structure, the bag opens and closes with a simple twist, eliminating the need for zippers, buttons, or complex hardware (unscrew to open, screw to close). 3D-printed using a selection of bio-based filaments, the rigid shell seamlessly merges functional design with sustainable manufacturing, offering a diverse colour palette.

Your anchor

Born in a shape and size that fits the body, Bag-buoy is easy to wear. Designed for adaptability, integrated loops accommodate straps and carabiners, allowing it to be worn across the body, around the waist, on the back, or over the shoulder. Bag-buoy transforms an iconic maritime marker into a versatile piece of wearable design, a durable container meant to move with you. Bag-buoy is a floating companion built to navigate daily life and to follow human travels, a functional anchor alongside you, wherever your journey takes you.

A limited edition of Bag-buoy is available for purchase on-site during Dutch Design Week.

About Mathias Blanc

Mathias Blanc is a material researcher from Southern France. As a crafter of experiences, he builds objects and languages for human interactions. Blanc takes an exploratory lab approach merging biomaterials with 3D-printing techniques, rethinking traditions through new technologies.

Olive green bag-buoy — © Mathias Blanc

Olive green bag-buoy worn — © Mathias Blanc

Transparent white bag-buoy — © Mathias Blanc

Orange bag-buoy — © Mathias Blanc