Featuresr pc shell and eps foam well integrated and robust r short press to switch 3 light modes dazzling mode breathing mode and one color mode with 15 displaysr 18 vents with inner air channel deliver cooler airr removable washable 78mm in thicknesspadding for best wearing comfortr rotary internal regulator to adjust the head circumference from 22in to 244inr usb rechargeable wide coverage illumination