Eco Highlighter Pencils - Set of 4 GREEN - Will Not Bleed or Dry Out - Includes a Jumbo Sharpener WHY - millions of highlighters are used each day and most of them are a formulation of liquid ink or gel encased in plastic. They're nearly impossible to recycle, so we throw them away and the number is staggering. There's another option, a highlighter you can feel good about, and this one small choice can make a big difference. SUSTAINABLE - responsibly made (wood from managed forests) with a natural finish so they are biodegradable (no plastics, no ink solvents, no volatile organic compounds). LONG LASTING - dry highlighters don't bleed through thin pages, leak or dry out. They sharpen easily and the core will not chip or crumble like other brands. Excellent for home, school and office.ghlighter) SIZE DIMENSIONS - the pencils are JUMBO sized (3/8 inch in diameter x 6 7/8 inches in length) and hexagon shape - comfortable to hold and use. To sharpen, use a JUMBO sharpener SET includes: 4 JUMBO neon green highlighter pencils and a wooden JUMBO sharpener