the marketing guys at sunblades convinced the company to sell shades that aren’t shades. the sunblade’s effect is equally revealing, affording the eyes optimum protection against glaring sunlight without distorting or obstructing vision.  basically, it is a frame with an adjustable visor that blocks, incident light, thus shielding the eyes under all possible circumstances. when you look straight ahead, your vision is unimpaired. when you look a little higher (where the sun might be lurking) you’re covered. via oh gizmo