Berkshire Running Camp - Performance Cap (OG604) (B121 hat) Size:Small The Endorphin 3 is the

The Endorphin 3 is the lightest spike for any miler to 10K runner

It's a must have for both spectators and runners for the 2026 race

The side pockets and back welt pocket offer convenience and the drawstring waist allows for an adjustable fit

Extended snap placket makes for an easy on/off

Berkshire Running Camp - Performance Cap (OG604) (B121 hat) Size:Small The Endorphin 3 is theProduct Description 94 6 poly spandex micro ripstop Durable water repellent (DWR) finish helps keep cap afloat in water Moisture wicking sweatband and front panels lining Breathable oval pattern perforation in mid and back panels Structured Mid profile Curved bill Matte black silicone O on back 7 position adjustable snapback closure