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Our Materials

Built from what the world left behind. Made to last.

What Makes an Indosole

Every component of an Indosole is chosen with intention — for performance, for ethics, for the planet. This is not greenwashing. This is engineering with a conscience.

WHAT GOES IN

Recycled Tire Outsole

Made from waste tires that will never decompose — collected from stockyards and illegal dumps, ground into raw material, and reformed into the most durable sole we know how to make. The thing that connects you to the ground was once destined to poison it.

ENVIROFIBER Straps

Not a compromise — an advancement. Our ENVIROFIBER straps were developed through years of deep R&D to achieve what conventional materials couldn't: low water use, natural dyes, zero skin irritation. The strap that makes the sandal, built without shortcuts.

Natural Rubber

Tapped and processed in Indonesia, dyed only with natural dyes, and blended with our recycled rubber to create a footbed that responds to your foot. No chemical run-off, no synthetic off-gassing. Just the immediate, distinctive comfort of a material that comes from the earth and stays true to it.

Contoured Arch Support

A sandal that supports you is a sandal you'll actually wear. Our footbeds are ergonomically contoured — cushioned at the heel, arched through the midfoot, grounded at the toe. Designed for those who move through the world on their own terms, and need their footwear to keep up.

Waterproof & Anti-Bacterial

Wash them. Dry them. Take them back in. Our materials were selected precisely because they perform in water and recover from it — resistant to bacterial build-up, indifferent to salt, chlorine, and rain. For footwear that lives between environments and thrives in all of them.

Vegan & B Corp Certified

No animal products. No compromises. As a certified B Corporation, we are independently assessed against the highest standards for environmental and social performance — because making a claim is easy, and meeting the standard is what matters. These certifications are not marketing. They are accountability.

SETT

OUR TECHNOLOGY

SETT is our proprietary tire-processing technology — the system that makes it possible to recover 100% of each tire we collect. Where conventional recycling leaves off-cuts and residue, SETT leaves nothing. Every gram of rubber is recovered, ground, and reformed. Waste becomes material. Material becomes sole.

Our Materials Process

1) Collected from waste stockyards

We source tires that would otherwise sit in landfills, accumulate in illegal dumps, or be burned for fuel — releasing toxic black carbon into the air and heavy metals into the ground. Our collection network identifies these waste stockpiles and diverts them before the damage is done.

2) Ground into powder using SETT

Our proprietary SETT technology breaks each tire down completely — steel bead to sidewall. The rubber is precision-ground into a fine, consistent powder. Unlike conventional shredding methods, SETT recovers 100% of each tire with no off-cuts and no residue left behind. The machine was engineered for one purpose: zero waste.

3) Formed into your Indosole

The recycled rubber powder is blended with ethically sourced natural rubber — creating a compound with real grip, real durability, and a feel underfoot that synthetic materials can't replicate. Pressed and formed into the outsoles that define us: unmistakable, enduring, and made from something the world had given up on.

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