Featuresr integrated in mold pc shell with 90gl density eps impact foamr 30 integrated vents seek for ample and impressive ventilationr fit adjustment back wheel to adapt your head circumference comfortablyr removable inner padding with bug screen to absorb shock and sweat and prevent bugr breathable and removable chin guard and head protective paddingr with detachable visor to add shade and cooling in hot sun daysr specially designed for pedal cyclists skateboarders and roller skaters