We used Watercolor Crayons in my classes last week and I did some very quick ones here to show how fast you can work with them. Each took me about five - ten minutes. They're small, 5 x 7 inches. I scribbled in the crayons dry, then brushed them with a wet brush to smooth, and blend the color. It is incredibly fun - a great thing to try if you 're frustrated with traditional watercolor and want a bit more control. I have one more I may post later that I left in my car.