An optical illusion which is also called a visual illusion is an illusion caused by the visual system and characterized by a visual perspective that makes something appears to differ from reality. With this optical illusion colouring book you can enter a realm of deceptive designs that offer wonderful opportunities for imaginative and inventive colouring. You'll find a variety of 70 designs of constructed in a strange, interlocking and mind-boggling way, that defy reality and challenge the imagination to grasp their form and structure. These books are a great stress buster and can help divert a persons string of thoughts. These colouring books will not only help you de-stress but also help you feel calm. There are absolutely no rules - simply choose a design at random, choose any combination of colours you like and get started. As you concentrate on the simple action of colouring in, you will find calm returning. The sheets in this pad are all detachable, so you can display your favourite creations.
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