It used to be that pencils you could blend using water were 'water-soluble'. But people thought of them as watercolours made with pencils, and 'watercolour pencil' now seems to be the preferred term. It's what's on the tin of my new purchase, 120 pencils -- the complete range of colours -- put out by the German manufacturer, Faber-Castell (in business since 1761!). I love them. They look grand when you just lay the colour down dry, and they're great when you blend them with a paper stump (tightly rolled paper stick with pointed ends) -- and they will no doubt be excellent when I get around to using water. The loveliness of these pencils is that they are so versatile: loaded with pigment, they keep a point well without breaking; and they are beautifully rich even without water added. Here is my try-out picture, of an Envy apple (no water added). Can't wait to explore with these pencils further!