Thalassa activewear is in the pursuit of having fun & freeing fitness from performance. We are here to give active fashion a new face; guided by the desire to create effortlessly unpredictable pieces.


We prefer workshops over sweatshops.
We design for longevity.
We produce locally and source ethically.


Our packaging is biodegradable.
We use eco-friendly dies.
We upcycle left over fabrics.
We repurpose past collection pieces.
Pre-orders to minimize waste.

Gabriela and Alexandra co-founders of Thalassa, are childhood friends who grew up in the coastal city of Lima Peru. They came together to celebrate the ocean, movement and crafts.

Icon for Happy Worker

Workers are paid a living wage; no child labour or human trafficking is involved in the production of the collection; the factory is compliant with all local environmental regulations.

Icon for Non-toxic Dyes

The materials in this collection are free from AZO dyes and phthalates.

Icon for Cruelty Free

The products and constituent ingredients in this collection are not tested on animals.

Icon for Artisan

This collection is entirely made in the designer’s studio and/or by an artisan collective of fewer than 10 people.

Icon for Low-Impact

All packaging in this collection is recyclable, recycled and free from petroleum based plastics.