Swiffer® Dusters TRAP + LOCK dust wherever dust shows up, including fan blades, blinds, car interior, keyboard vents, bookcases, and more. They are made with specially coated fibers that grab onto dust and don't let go. Leaves behind up to one hour of freshness after initial product use. Bristle Material: Fiber; Bristle Length: 2"; Bristle Color: Light Blue; Type: Duster Refill.