Ultra- Clean Washable Markers are specially formulated with ColorMax technology to have the brightest, vivid colors and overall great quality you expect from Crayola. .The Markers feature a versatile tip that allows you to draw thick or thin lines. When compared with other markers, Crayola are longer lasting and won't dry out as the tip can be rejuvenated by dipping in room temperature water. Crayola's Ultra-Clean washable ink is specially formulated to wash off machine washable clothing, walls, carpet and furniture.