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Graduation project / Circular design
SHFT Bag
A crossbody bag sewn from the fabric offcuts of Sit & Heat's heated hospitality cushions, designed with, and produced in a social atelier.
A crossbody bag sewn from the fabric offcuts of Sit & Heat's heated hospitality cushions, designed with, and produced in a social atelier.
Overview
SHFT is my graduation project for Industrial Product Design at HAN: a crossbody bag made entirely from the fabric offcuts left over when Sit & Heat produces its heated hospitality cushions, material that would otherwise be thrown away. That's the first half of the sustainability story. The second half is who makes it: every bag is sewn by Blueview, a social atelier that gives people with distance to the labour market a place to build real production skill. Less material wasted, and meaningful work created around making that happen, the two had to hold together for this project to count as sustainable at all, not just one or the other.
Getting there took four full prototypes, interviews with the atelier's own seamstresses, and a fair number of decisions that got reversed once real people tried to make or wear the thing. This page covers the shape of that story in short form. For the full story, every prototype, interview and dead end. Read the graduation report here.
Those four prototypes are the hands-first half of the same philosophy: sustainability decided the material, but only sewing, wearing and re-cutting the thing decided the actual shape.
The offcuts keep their original print and colour instead of being dyed to match, material honesty that leaves the bag's history visible rather than disguised.
Read the full graduation report →Process
Four prototypes got this bag here, each one tested with the people who'd actually have to make it or wear it; Blueview's seamstresses, their in house expert Assad, and people trying the bag on the street. The choices below are the ones that mattered most.
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Material
Every batch is different
The colour of any given SHFT bag depends on whatever cushion offcuts happen to be in stock that week, sometimes a bold mustard-and-charcoal split, sometimes a quiet sage green. That's not a styling choice, it's a direct consequence of building from real leftover material instead of ordering fabric to match a spec. The black strap serounding the bag and a D-ring on the front gives every version the same recognisable silhouette, so the identity holds even when the colour doesn't.
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Built around a real day
Water bottle, headphones, a slim laptop, wallet, keys, the bag was sized and pocketed around what people said they carry daily, not around what looked good empty. An early version without internal organisation left everything sliding around loose against the laptop; the current inner sleeve exists because of that specific complaint.
Detail
Three spots on the bag worth a closer look, click a marker.
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Same D-ring, every batch
This clip and D-ring are the same on every bag, whatever the fabric underneath.
That's what keeps the silhouette recognisable even when the colour never repeats.
One strap, four revisions
This slider is the actual adjustment: pull it long for a crossbody carry, shorten it and the bag drops to a sling.
That single conversion is the reason the strap system went through four rounds of revision.
Unstitched, on purpose
Along the black strap at the bottom of the bag, a short stretch is left unstitched on purpose.
Hook a jacket or other gear through the gap so it doesn't have to hang over your handlebars.
In motion
One strap, two ways to wear it. This is the actual adjustment, not a mock-up. Pull it long for a crossbody carry, shorten it and the bag drops to a sling at the hip. That single conversion was the whole reason the strap system went through four rounds of revision.
Brand & impact
Alongside the bag itself, this graduation project included building SHFT into its own small brand, distinct from Sit & Heat, even though every gram of material comes directly from them.
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"We don't recycle. We redesign."
SHFT comes from the people who make Sit & Heat. After producing technical upholstery fabric, material was left over, not because the quality fell short, but because its original purpose had passed. Not offcuts because they're scraps, but because they're too good to throw away.
The brand sits at the intersection of technical functionality and responsible material use: no fast fashion, no greenwashing, no product performing sustainability to look sustainable, just strong materials, considered design, and a long lifespan. SHFT convinces by showing how good the product is, not by talking about how sustainable it is.
The name
01 The mechanism. Switching between crossbody and sling.
02 The promise. A shift from waste to worth.
03 The origin. Sit & Heat, Fabric Transformation.
±€70
Consumer price per bag, at a 2.5× retail margin
€5–8
Hardware cost per bag, material and atelier labour run through Blueview's social programme rather than a standard cost line
±500 / yr
Bags at 60kg of offcuts a month, ±8.3 tonnes CO₂ avoided per year
±636 / yr
Bags at 78kg of offcuts a month, ±10.5 tonnes CO₂ avoided per year
In the wild
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