Rainbow Sparkle: Watercolor Gel Crayons (Set of 12)Create bold strokes of color and watch them magically change when you add water. These washable watercolor gel crayons sparkle with a rainbow of metallic hues. 12 water soluble, non toxic markers are included, each with a twist up mechanism. If you run low, just turn the barrel for more color! Add a wet paintbrush for watercolor effects for truly unique works of art. Water soluble. Will not dry out. Washable. Non toxic. Suitable for ages 3 and up.