Material Focus: Why Circle’s Sourcing is Unique in Europe

By Ulysse Zachary

January 29, 2026

Discover the story behind your gear. From technical innovation to total transparency, explore our Endurance, Wind Runner, and Legend collections.

At Circle, we don’t just design sportswear: we create ecosystems. In 2024, our commitment to circular fashion earned us B Corp certification with a score of 96.1 (well above the average of 50.9).

But what makes our sourcing truly unique? It is our ability to mobilize the best European expertise for every fiber.

1. ENDURANCE RANGE: OUR SEAMLESS TECHNOLOGY

The cold-weather running essential. The Endurance range is designed to feel like an extension of your body.

• Innovation: Seamless technology for a "second skin" fit and zero irritation.

• Performance: Lined high collar, raglan sleeves, and an integrated watch window to track your stats without letting the cold in.

• Local Impact: * Materials: 94% Recycled Polyamide sourced from Italy.

  • Manufacturing: Knitting, dyeing, and assembly in Portugal.

  • Carbon Footprint: 3.5 kg CO2 (equivalent to only 32 km driven by car).

2. WIND RUNNER: THE 100% RECYCLED SHIELD

The ultimate jacket to brave the elements without compromising your values.

• Innovation: Featuring Q-NOVA® recycled polyamide, an ultra-abrasion-resistant and water-repellent material.

• Practicality: Lightweight and fully packable into its own chest pocket.

• Local Impact:

  • Materials: Fibers from Spain (80%) and Germany (20%).

  • Expertise: Spinning and weaving in Italy, assembly in Portugal.

  • Traceability: A product made of 99% recycled materials.

3. LEGEND 2.0: THE ECO-TECHNICAL ICON REIMAGINED

The Legend 2.0 retains its iconic fit while pushing performance standards even further. It is the perfect example of our "multi-country" European sourcing.

• NanoTech™ Innovation: Developed in Switzerland, this technology ensures ultra-fast drying and unparalleled moisture-wicking.

• Absolute Lightness: Weighing only 100g (size M) for a feeling of total freedom.

• The Unique Journey of the Legend 2.0:

  1. Spain: Reco Nylon recycling and spinning.

  2. Germany: High-precision knitting.

  3. Switzerland: Technical dyeing and NanoTech™ treatment.

  4. Portugal: Printing and final assembly.

• Impact: Only 2.5 kg CO2 (equivalent to 23 km driven by car).

COMPARATIVE TABLE: PERFORMANCE & IMPACT