The Future
of Stretch is Here

Engineered for scale: the first biobased stretch fibre that replaces elastane without industrial retooling.

Stretch defines modern apparel, but it is built on yesterday's fibre.

Get in Touch

Stretch defines modern apparel, but it is built on yesterday's fibre.

Elastane is found throughout modern clothing. It is entirely petrochemical, does not biodegrade, and cannot be separated from fabric blends at end of life. It is one of the key blockers on the fashion industry's path to sustainability.

Tera Mira exists to solve this. Our seaweed-derived elastic fibre is a true drop-in alternative: designed for responsible sourcing, clean manufacturing, and genuine end-of-life solutions.

Our Technology

A new kind of stretch.
Born from the sea.

Bio-based

Derived from seaweed, a natural and renewable marine resource. A material that begins and ends with nature.

Drop-in Compatible

Engineered to run on existing wet-spinning infrastructure. Brands and mills do not need to retool. Tera Mira integrates directly into your current supply chain.

Truly Circular

Biodegradable at end of life. Designed with responsible sourcing and manufacturing at its core. The first elastic fibre that closes the loop on stretch clothing waste.

From Ocean to Garment

A fully circular production model

From seaweed to a fibre that can be returned to the earth. Every step designed for transparency, scalability, and minimal environmental impact.

Tera Mira production cycle
Natural landscape

"Performance does not have to come from petrochemicals."

Built by people who believe in better

Jeanne and Lucy, co-founders of Tera Mira

Lucy Dain-Williams

Co-founder and CTO

"It's time to prove that performance does not have to come from petrochemicals."

Jeanne Bégon-Lours

Co-founder and CEO

"I've been obsessed with clothes waste my whole career. Tera Mira is my answer to the root of the problem."

Supported By

H&M Foundation Henry Royce Institute Innovate UK Grantham Institute Green Tech Legal Collaborative Makerversity Imperial College London

We'd love to hear from you

Follow on LinkedIn