Gel Washable Markers are perfect for writing and doodling on black and any other colored paper. Unique markers are opaque and vibrant. Create vibrant effects on dark paper, poster boards, Crayola Model Magic, windows and much more. Sturdy packaging features an easy-to-use handle. Markers classpack includes a free lesson plan booklet, five extra marker caps and three free Overwriter markers. Certified AP nontoxic.