Derwent Lightfast Colored Pencil Set of 36 Pencils in Metal Tin

Derwent Lightfast pencils have been formulated as 100% lightfast, this  colored core combats the effects of UVA-radiation and maintains the  longevity of colors on permanent display. Derwent Lightfast pencils are  oil-based, smooth and creamy with a beautiful laydown of rich color. The  thick core gives a dense colour application which brings vibrancy to  any drawing. Artwork created will remain lightfast for up to 100 years  under museum conditions. All colors comply with international lightfast  testing standard, ASTM D6901.