100% polyester materialMesh around the crown of the head keeps you cool and ventilated1″ wide reflective material with 2″ contrasting color material 360 degrees around the hatDark grey under brim reduces glareReflecting piping around brim and top of hatDrawstring keeps the hat securely on your headANSI 107 AccessoryFabric dye lot variances may occur and meet luminance factor as stated in the standard.