Ink Tracing is the technique used to ink the drawings to reveal the final art. It is also known as reverse coloring book for some people, images are printed in light color so you can easily trace over the lines with pen or marker, ideally use a black or colored brush pen. After the inking you can color the page use pencils or markers (place sheet underneath to avoid bleeding of markers) - 30 Unique Illustrations for Tracing - Printed on single-sided - Large page size of 8.5" x 11" - Relax and stress free activity - Easy to Ink, without any complex or stressful coloring