This book safe is a great hiding spot. A burglar certainly isnt going to stop and read a book while hes robbing you. Nor is he going to go through your library collection to see if any are hollowed out like this one is. The velvety interior that lines the hollowed out portion will protect whatever you decide to put inside. Although not the most spacious hiding spot, the book safe does provide adequate space for most treasured items. You wont be able to tell this book safe from any other book because its made out of a real book. In fact, its designed so well, that unless you open it past the first few pages, you wont be able to tell it apart from any of your other books. You can even take this diversion safe with you when traveling. Thieves are looking for valuables, but they wont think to look in a book. A great idea for your home or a great idea to give as a gift. The inside dimensions are: 6-3/4"L x 3-3/4"W x 1"D.