What Our Gearhead(R) Experts Are Saying:"I've been using the FSTCap SC for tempo runs and race days because it stays light and breathable even when things heat up. The mesh panels dump heat well, and the soft curved brim packs down easily when I need to stash it. It's one of those caps you forget you're wearing during a long run."Early miles often start before the sun climbs above the skyline, and the Ciele Athletics FSTCap SC Comp Ninety SL running hat keeps us comfortable from the first stride through the final push. Whether we're chasing a personal best on race day or settling into a steady training run, this lightweight cap delivers breathable coverage without distraction. The recycled FLEXweave woven fabric provides lightweight durability, while COOLmatic PLUS MIKRAmesh panels across the top, sides, and headband promote airflow and moisture management during high-output efforts. The SOFTcurved brim adds sun protection and can be easily packed away when the clouds roll in or the pace heats up. Reflective details improve visibility during early morning or evening runs, and the quick-adjust closure helps dial in a secure fit for miles ahead.