ACG Radical AirFlow Fly Cap
Colorway: White/White · Style code: IX1854-100 · Release date: July 29, 2026 at 10:00 AM ET · Price: $65 · Availability: Sold out at retail
Where to buy: Nike · Tracked at 2 retailers
More colorways: ACG Radical AirFlow Fly Cap (IX1854-060)
The ACG Radical AirFlow Fly Cap is a trail running hat built around the ventilating fabric program Nike calls Radical AirFlow. Its open-hole knit construction is designed to channel air directly to the head so sweat evaporates quickly on hot climbs, while Dri-FIT fibers pull moisture off the skin as you move. The low-profile shape keeps the cap secure at speed, a pre-curved bill blocks sun, and a hook-and-loop closure with ACG branding allows quick fit adjustments mid-run. Nike says the fabric was worn and tested by its ACG trail running athletes before reaching retail.
The White edition arrives on July 29, 2026 at $65 as part of a broader Radical AirFlow drop that also includes long-sleeve tops and tanks in the same cooling fabric. Within the ACG line it extends the warm-weather running assortment, giving the collection a race-oriented headwear piece to match its summer apparel.