The Copic Marker Architecture Set is a set of colours geared for landscape and architecture rendering. The set includes a sturdy plastic stand-up wallet handy for keeping the pens neat and tidy. The 12 markers are alcohol based permanent and nontoxic. The colours included in this set are light orange putty dull ivory clay sand chamois lipstick natural light mahogany burnt sienna cool grey C2 cool grey C4 & 100 black. Developed by design experts. Contains 12 colours (11 + Black). Refillable.