Headsweats Ultralite Hat Headsweats SWAT (Speed wicking absorption technology) headband keeps the sweat out of your eyes so you can focus on your run Headsweats GRB (Glare reducing brim) keeps the sun and glare out of your eyes Adjustable buckle closure for a custom fit Pony tail opening 100% Coolmax polyester for fast drying, wicking and optimal breathability