Adjustable Dri-FIT Trail-Running Hat ACG Radical AirFlow Fly Cap

From Nike

Nike ACG Radical AirFlow Fly Cap - Open-Hole Knit for Maximum Airflow at Pace

Radical AirFlow is a wildly ambitious fabric centred on cranking up the A/C. This race-ready ACG Fly Cap channels more air directly to your head as you push pace, worn and tested by elite ACG Trail Running athletes. Your turn to feel the chill.

Radical AirFlow Open-Hole Knit Construction

Radical AirFlow features a wildly breathable open-hole construction that channels airflow directly to skin for rapid sweat evaporation during movement. Soft open-hole knit feels smooth against skin and lets body heat escape quickly, most effective during sustained trail efforts when head temperature rises and standard fabrics trap warmth.

Manufacturer's description, supplied via the retailer feed.