Featuresr integrated in mold pc shell with104gldensity eps impact foamr fit adjustment back wheel 228 244 inches for comfort wearingr 26 integrated vents seek for ample and good ventilationr removable inner padding to absorb shock and sweatr breathable and soft chin guard and head protective paddingr wind break tail design reduces air resistance efficientlyr come with a fit pouch for carrying conveniencer specially designed for pedal cyclists skateboarders and roller skatersr not