Ciele FSTCap Ethereal - Icon - Circle C

You've felt it by mile 8: your cap's soaked through, sitting heavy, and doing nothing but trapping heat on your head. Here's what most athletes don't realize — the fabric touching your scalp matters just as much as the shoes on your feet when the miles stack up and the sun's not letting up.

The Ciele FSTCap Ethereal is the low-profile race cap built with carbon-embedded knit panels and ceramic-infused UV shielding to keep your head cool from warm-up to finish line.

Carbon-Cooled Side Panels The side panels use a knit woven with actual carbon yarn, which pulls heat and sweat away from your scalp faster than standard mesh. Less heat buildup means less of that "my head is cooking" feeling at mile 15.

Ceramic UV Shield on the Brim The brim and side panels are reinforced with a ceramic ripstop that blocks UV rays without adding bulk or stiffness. You get sun protection that still moves and flexes with you, not a stiff plastic visor.

Stretch Ripstop That Actually Fits The main fabric is a stretch-woven ripstop that molds to your head shape instead of sitting like a shell on top of it. It's durable enough to survive years of trail dust and gear bags, but it still flexes with every stride.

The technology here comes down to airflow and heat management. Vents cut into the crown pull warm air out while fresh air moves in, so heat doesn't just sit trapped against your scalp. The carbon yarn woven into the knit panels works alongside a moisture-wicking finish that pulls sweat off your skin and pushes it to the fabric surface, where it evaporates instead of dripping into your eyes. That same fabric resists odor buildup, so it doesn't need a trip through the wash after every long run.

Sizing: This cap runs S/M (fits heads around 56.5cm). Check Ciele's fit guide before you buy if you're between sizes. Wear it: Any run where sun and sweat are both in play — long tempo runs, midday trail miles, or race day when you can't afford a heavy, soaked cap dragging on your head. Wash it: Machine wash cold with like colors, skip the fabric softener and bleach, and hang to dry. No dryer — heat breaks down the technical fabric over time.

This is the same low-profile FST silhouette Ciele-sponsored distance runners reach for on race day, when every gram and every degree of heat matters. It's backed by Ciele's Million Miles Guarantee, so the brand is putting its money behind the durability claim.

Stop settling for a cap that's just soaking up sweat and holding in heat. Get one engineered to move it out.