Double-ended highlighters are made from a high percentage of recycled post-consumer material, including recycled shopping baskets and car battery encasements. Multiple tips allow highlighting and underlining in one convenient utensil. Highlight your important notes and passages in fluorescent yellow using the chisel or fine point. Highlighters are ideal for bibles, legal books and textbooks. Use the pocket clip for easy storage. Eco Zebrite Highlighters are nonrefillable.