Museum Aquarelle is not only a water soluble pencil, it is Watercolor in pencil form Developed in Caran D'Ache's Geneva workshop in close collaboration with master watercolour artists; their extra-fine Quality makes them Perfect For both watercolour Painting and for artistic drawing. Each pencil is made from premium cedar Wood for easy and smooth sharpening, and a hexagonal shape to reduce risk of rolling and fAlling off any tables or Surfaces. They have soft, smooth lead centers with a matt finish for a smooth, flowing delivery of Color every time it hits the paper. When dissolved in water, the lead becomes pure watercolour Paint due to its high Pigment concentration and transparency!