This has been such a fun product to work with. I thought this would be cool to use for adult coloring books, so I researched which ones have thick pages so the watercolors wouldn't bleed through. (The Secret Garden book works great for this!). The thin brush is amazing for all the small details. The water lasts a while so I don't have to worry about refilling it often which is a plus, because sometimes I end up doing this for hours! The colors are all very rich and bright.