The built-in magnetic closure ensures that your bookmark stays securely in place, no matter how thick your book is. Choose from a variety of fonts and colors to personalize your bookmark with your initials, name, or a special message. "This bookmark is the perfect gift for any book lover, and it's sure to be cherished for years to come." "Click here to learn more about our personalized magnetic bookmarks and order yours today!" Gift for Him or Her Magnetic Bookmark: It has strong adsorption capacity and will not fall off even if book is 0.4 inches thick. "Most of the our bookmark designs are intended for placement at the top of the book. However, we are happy to accommodate requests for placement of different positions. Size & Material: 3.9x1.2In/10x3cm.Made of PU leather and magnets. leather bookmarks gives less damage to books than metal or plastic bookmarks.