Luma Reppu by Colin Heston is a highly esteemed winner of the very prestigious 2025 Pronssipalkinto A' Design Award in Asustemuotoilu Competition Category.

PronssiAsusteet· 2025

Luma Reppu

by Colin Heston

Client: Heston Design

Pronssipalkinto A' Design Award Winner in Asusteet Category

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Colors

The Design

About Luma Reppu

Luma on reppu, joka on valmistettu patentoidulla 3D-neulontaprosessilla, joka vähentää materiaalihävikkiä ja yksinkertaistaa tuotantoa. Toisin kuin perinteiset leikkaus- ja ompelumenetelmät, tämä lähestymistapa tuottaa täysin muotoillut komponentit suoraan digitaalisista kaavoista minimaalisella hävikillä ja työllä. Reppu on valmistettu yksittäisistä langoista, jotka ovat 100 % kuluttajaa edeltävästä kierrätetystä nailonista, mikä auttaa vähentämään energiankulutusta, päästöjä ja materiaalihävikkiä. Luman muotoilu on luonnon inspiroima ja pyrkii tarjoamaan tasapainon toiminnallisuuden ja kestävyyden välillä virtaviivaisen minimalistisen muodon kautta.

The Recognition

About the Pronssipalkinto A' Design Award

Luma Reppu on Pronssipalkinnon A' Design Award -voittaja, erittäin arvostettu tunnustus, joka myönnetään erinomaisille designeille, joita luonnehtivat luovuus, nerokkuus ja oveluus. Pronssivoittajat ovat runsaan taitavia ja silmiinpistävän luovia taiteellisia tuotoksia, jotka todistavat suunnittelijoidensa laajaa kokemusta, mielikuvitusta ja kekseliäisyyttä. Luma Reppu:n odotetaan olevan korkeassa arvossa pidetty, ihailtu ja rakastettu esine, joka on huomattavan ammattimainen ja innovatiivinen. Tämä Pronssipalkinnon A' Design Award -voittajadesign sisällyttää itseensä parhaita käytäntöjä taiteessa, tieteessä, designissa ja teknologiassa ja on erinomainen huomiollaan yksityiskohtiin. Luma Reppu tyydyttää upeasti tarpeita, koskettaa haluja, viehättää tunteita ja vetoaa uteliaisuuteen.

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: The Luma is a revolutionary backpack that blends sustainability, technology, and innovative design. Unlike traditional backpacks, which rely on wasteful cut-and-sew methods, Luma is created using a patented 3D knitting process. This groundbreaking technique produces seamless backpack components with little to no production waste. By condensing and optimizing the production process through automation, we are able to enhance efficiency while reducing our environmental footprint. We have created a uniquely new aesthetic that stands out from a crowded market, within a product category that has remained the same for hundreds of years. With our unique process, knit components are lighter, stronger, and more durable than traditional techniques. Each knit component is engineered with unique attributes. The shoulder straps and back panel are knit with low stretch mesh structures to disperse weight and better ergonomics, while spacer knit structures provide cushioning while remaining extremely breathable. Whereas the 3D knit main carrying compartment is engineered with no stretch and a thick 3-layer knit for durability. The main compartment also has low-melt thermoforming yarn that bonds with the nylon to add strength and structure to the form. The 3D knit structures also seamlessly integrate pocket openings and webbing for gear loops without the need to cut and sew. Thoughtfully designed to safely carry all your daily essentials no matter what environment you find yourself in.
Dimensions & Packaging: All knit components are made from 100% pre-consumer recycled nylon, cutting energy use by 45%, reducing greenhouse gas emissions by over 30%, and using 20% less water. The knit structures consist of over 1600 denier from six separate ends of nylon yarn, creating an extremely durable and lightweight 3-layer engineered knit.
Tags: 3D Knitting, Sustainable, Seamless, Backpack, Accessory, Everyday Carry
Production Technology: The Luma leverages advanced 3D knitting technology to autonomously produce individual bag components directly from single strands of yarn, with zero production waste. This seamless process allows us to integrate custom features, structures, and textures into each piece, enhancing both functionality and aesthetics. By combining up to 36 different yarns within a single knit component, we can precisely tailor the material’s properties to deliver purpose-driven performance throughout the bag’s construction. Made from 100% pre-consumer recycled nylon, cutting energy use by 45%, reducing greenhouse gas emissions by over 30%, and using 20% less water.

- Reduction in manual labor through automation
- Reduction in quality deviation
- Reduction of fail points within the product
- Cost & material savings
- Streamlined production process (minimal secondary processes)
- Creates a unique seamless design aesthetic
Design Challenge: One of the greatest challenges of this project was mastering a highly specialized technology from the ground up. As someone new to 3D knitting, I had to completely rethink my approach to design, adapting my process to align with the unique constraints and possibilities of the production method. This required not only a deep technical learning curve but also a shift in mindset—designing for a medium where form, function, and fabrication are inherently intertwined. Pushing into uncharted territory to create a product that had never been made before meant constant experimentation, iteration, and problem-solving at every stage.
Research: This 3D knit backpack is the result of five years of dedicated research and development, beginning with early swatches and culminating in refined, production-ready samples. Over the course of this project, more than 20 unique knit designs were created and iterated upon. The most successful elements from each were synthesized into a cohesive design language. We developed approximately 10–12 fully functional prototypes, each exploring variations in knit structures, material compositions, and functional features. These prototypes were tested across diverse environments and with users from a wide range of lifestyles, providing critical feedback that informed the final product’s performance, comfort, and durability.
Inspiration: The lightbulb went off and the idea really took shape after a trip to China, where I witnessed the immense waste and labor intensity in traditional soft goods manufacturing. During this trip I had the overwhelming feeling that there had to be a better way of creating these products. I set out to find a better solution that would lessen the reliance on a globalized supply chain, promote local community manufacturing, and leave less of an impact on our planet. That experience pushed me to explore 3D knitting—a process that eliminates excess material, reduces labor, and enables precise, zero-waste production. This backpack redefines how soft goods are made, proving that sustainability, performance, and thoughtful design can go hand in hand.
Project Duration: 2021-2025
Operation Flow: The Luma is more than a bag—it’s a movement toward smarter, more responsible design. By fusing technology with sustainability, we’ve created a product that not only meets modern consumer demands but sets a new benchmark for the industry. It reflects my belief that through innovation, we can reduce waste while creating purpose driven products. This is the future of carry—seamless, sustainable, and revolutionary.
Patents: Patent No. US10959506B2
Team Members: Colin Heston
Image Credits: Colin Heston