Vibrant, bright, water-based markers have up to twice the ink as other ink supplies No-bleed colors are ideal for flip charts, posters, maps and coloring books. Durable tips and the ventilated safety caps are ideal for children. Conforms to ASTM D-4236. Certified AP nontoxic Mr. Sketch Markers & Highlighters part of a large selection of office supplies. Sanford(R) Mr. Sketch(R) Watercolor Markers, Assorted Colors, Set Of 12 is one of many Art Markers available through Office Depot. Made by Mr. Sketch.