Derwent 100 Lightfast Coloured Pencils Professional Tin Set + Paper Pad Light FastDescriptionSpecificationsShipping Derwent Lightfast Pencils have been formulated to be 100% lightfast. The revolutionary core is resistant to prolonged colour change ensuring artwork will not fade for 100 years under museum conditions. Tested under the harshest conditions to internationally recognised standards, this premium range of oil based pencils offers an incredible range of colours not seen in other lightfast collections. Set contains 100