Support your favorite local running shop with this runner's cap from Sage to Summit! Lightweight tech fabric on the front panel is breathable and dries quickly, and the mesh back adds plenty of ventilation. Snap-back closure adjusts to fit most adults (19.5-23.5 in / 50-60cm circumference). Note that the Aqua/Steele variety has a yellow underbill, while the Charcoal/White version has a black underbill.