Let your little one enjoy hours of creative fun with these Color Wonder paintbrush pens from Crayola. These pens are designed with a clear Color Wonder ink that only appears on a Color Wonder paper and not on fabrics, furniture or skin. Kids can use these mess-free pens for their on-the-go art projects. Details:Self-contained pens that produce fine brush strokesFast-drying inkConforms to ASTM D 4236For ages 3 and upContents:5 mess-free paintbrush pens (red, orange, green, yellow, blue)1 24-page Color Wonder book (plain paper)