Marino Aquarelle pencils will captivate the user with their brilliant colours, soft stroke and non-fading colours. These fine art pencils have been designed in accordance with the latest ASTM -D4303 for lightfastenss. All 36 Marino colours rate either LF1 or LF2 for lightfastness (LF1 best - LF5 worst). All colours can be intermixed to produce numerous intermediate tones. The 7.35mm cedar barrels are finished with a soft metallic blue lacquer and end-dipped to indicate colour.