Precision-engineered for the run.

The FSTCapEthereal silhouette pushes technical performance with stretch TERRAstop ripstop woven fabric that forms to your head. Carbon-embedded knits enhance moisture management, odor resistance, and durability, keeping you fresh through every mile. Lightweight yet structured, this cap is built for endurance, with aerodynamic shaping and strategic ventilation for ultimate breathability.

Designed for those who demand more from their gear, because every detail counts.

Product Highlights

• TERRAstop ripstop ™ stretch woven fabric
• RAYaway ceramic ripstop on brim and side panels.
• COOLmatic | EXP HOLLOWmesh™ knit with integrated carbon yarn for temperature control on sides
• COOLmatic | PLUS PROPHORmesh™ vents
• VITE back closure
• ETHERfit integrated brim

Product Highlights

• Machine washable.
• Reflective detailing for night run visibility.
• Ciele athletics™ million miles guarantee.
• S/M 56.5 cm +-.
• Designed for people who run.
• Main fabric: 85% nylon 15% spandex.
• Secondary fabric: 86% recycled polyester, 10% elastane, 3% polyester, 1% carbon