These ProMarkers are alcohol-based, nontoxic permanent ink markers with professional quality dyes. The translucent colors can be blended for an almost unlimited palette, while single colors can be layered for added depth and shade. Each marker has twin tips, the fine nib for precise coloring and details and the broad nib for large color fills. 6-Marker neon set includes Luminous Yellow, Radiant Orange, Spark Red, Electric Pink, Volt Blue and Glowing Green.Details:Includes assorted neon colors6 dual-tip markersFine nib and broad nibSmooth, streak-free finishCan be applied liberally to paper without damaging the surfaceFor use on paper, glass, acetate, plastic, metal, textiles and moreCertified nontoxic and conform to standard ASTM D-423