A snowflake pattern blue exercise book is a type of notebook that is designed for writing or drawing. It typically has a cover that is blue in color and features a snowflake pattern. The pages inside the book are usually lined or blank, and may be made of paper or other materials. Exercise books are commonly used for school or office work, or for personal use as a journal or notebook. They are often small and portable, making them convenient for carrying around and using on the go.