Adult coloring book with abstract designs, geometric and optical illusion patterns.: Easy to difficult irregular shapes and zentangle drawings to enhance creativity, relieve stress and relaxation.

This adult coloring book is a combination of unusual patterns ranging from easy to difficult patterns. This is the 2nd series of my abstract, geometric and optical illusion coloring book.
It contains 50 pages of a mixture of abstract designs, geometric patterns, zentangle arts, and many more.
Though this is best for grown-ups, this coloring book is for all ages! Why not challenge your kid by doing this abstract coloring book too?
This type of adult coloring book enhances your creativity as to how you mix and match colors to come up with a beautifully finished design. It is a very good way to relax and relieve stress as you color a variety of patterns and yes, it does tickle your brain in a good way.
The back page is blank to prevent bleeding so you can use any color type as you wish.
Enjoy and please do check my other coloring books too!