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Ciele Athletics

FSTCap Ethereal | Icon CircleC

Size:
Colour: Shadowcast
Shadowcast

The most technically advanced cap in Ciele's line-up

Most caps top out at "functional." The FSTCap Ethereal is built for something more specific – the runner who's genuinely thinking about every gram, every degree of heat, every second of drag. The foundation is TERRAstop ripstop stretch woven fabric, which does something most structured caps don't: it forms to the shape of your head rather than sitting on it, giving a locked-in feel that stays put through hard efforts without any pressure points. The COOLmatic EXP system takes moisture management further than the standard MIKRAmesh you'll find elsewhere in the Ciele range – carbon-embedded knits handle wicking and odour resistance with a durability that holds up over serious mileage. Aerodynamic shaping and strategic ventilation keep airflow moving when you need it most, and UPF sun protection means you're covered on long exposed runs in any season. Reflective detailing and a pliable brim round out the package.

    • TERRAstop ripstop stretch woven fabric that forms to the head for a precise, pressure-free fit
    • COOLmatic EXP carbon-embedded knit construction for advanced moisture management, odour resistance and durability
    • Aerodynamic shaping with strategic ventilation for maximum breathability
    • UPF sun protection
    • Pliable brim
    • Reflective detailing for low-light visibility
    • Machine washable
    • Backed by Ciele's million miles guarantee
    • S/M: approx. 56.5 cm
    • Main fabric: 85% nylon 15% spandex
    • Mesh fabric: 86% recycled polyester, 10% elastane, 3% polyester, 1% carbon
    • Wash cold water
    • Hang to dry
    • No tumble dry
    • Do not use softener
    • Wash with like colours
    • Do not bleach
    • Recycled Materials - made from recycled polyester
    • Sustainability through longevity - Ciele products are built to last. If at any point you have an issue with your Ciele Athletics™ product please reach out to Ciele to see how their million mile guarantee applies
    • Eco Certified - Ciele Athletics is a certified B Corp, the highest distinction for companies committed to making environmental and social responsibility a core part of their business operations
  • Everybody run. That's the rallying cry behind Ciele Athletics – but don't be fooled into thinking this gear is just for race-day regulars. Whether you're chasing a PB, catching a train, or wandering the city on a sun-soaked afternoon, Ciele's kit is built for movement, made to last, and designed to go wherever the day takes you. Founded in Montreal by Jeremy Bresnen and Mike Giles – two veterans of the outdoor industry – Ciele started with a single idea: that headwear could be better. Way better. As keen runners, they were sick of saggy cotton caps and lazily-designed headwear. So they built something smarter – gear that looked good, performed brilliantly, and could stand up to serious use.

    Since 2014, Ciele has gone from cult favourite to everyday staple. Their signature caps have become a fixture on trails, tracks, pavements and platforms – trusted by marathon elites, weekend wanderers, roamers, commuters and creatives alike. They've since expanded into a full range of technical wear, but headwear remains their beating heart.

    And it's not just good kit. Every single cap is made using recycled materials. They're a long-time certified B Corp too, meaning they're building a business that balances profit with purpose – committed to people and the planet as much as performance.

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