This activity book explores the therapeutic benefits of mosaic-style color-by-number designs featuring animals on black backgrounds for adult relaxation and stress relief. Created by Color By Number Coloring Book and Sunlife Drawing, it utilizes a selection of 25 large-scale mosaic designs to engage users in an artistic and creative process. The book aims to provide a peaceful and passionate coloring experience, allowing users to develop their artistic skills while creating visually appealing mosaic artworks.

This book is presented as a tool for adult relaxation and stress relief, utilizing the popular color-by-number format with a mosaic art style. The inclusion of animal motifs and black backgrounds aims to provide a visually engaging and calming experience. The publisher suggests that users can hone their artistic skills and find peace through this activity.