The Undercover Booksafe is a standard size book, BUT inside is a hidden, covered compartment of soft velour in which you can protect and conceal your possessions from theft and prying eyes. The compartment in the book is 7" long X 4" wide X 1 1/4" deep. The special compartment can protect jewelry, cash and valuable papers easily and inexpensively. Keep the Undercover Booksafe on your bedside table, use it when traveling, or let it become part of your library. Only you will know what the "hidden assets" are of this secret book.