Doubled-ended highlighter features a free-flowing delivery system that applies ink smoothly and evenly. See-through barrel displays ink color and level. All-purpose fluorescent ink writes on fax and carbonless paper. Ink won't fade or erase. Use pocket clip to attach to pockets, notebooks and binders. Design also includes a soft rubber grip for comfort and control. Highlighter is made of 74 percent post-consumer material. Nonrefillable.