The STABILO Woody is a coloured pencil, watercolour and wax crayon all in one. The extra-thick break-resistant 10mm lead works well on light and dark paper, and are especially suitable for small hands. The lead is wrapped up in a pencil-like wooden barrel which stops the lead breaking up into bits like traditional crayons. These are fabulously cute pencils which are a joy to use. Fatter, broader colour than a pencil; more convenient and less messy than a traditional wax crayon - the chunky lead has bright water-soluble pigment and the large diameter wooden case is comfortable to use. Non-toxic of course. Will also write on glass and most surfaces. Frequently used in commercial settings for marking up non-porous materials for cutting, as it easily wipes off. The Duo features a two-toned core. Set of 5 pencils includes 10 colours. Sharpen with a Woody Sharpener, available separately.