This is a multi-case, recommended for things like medicine record books and bank passbooks. It might make you feel a little better to bring your favorite case to the hospital ( ◠‿◠ ) It's a thin case that won't take up much space in your bag. It has two card pockets. Each pocket can hold about 3 cards. The outer fabric has interfacing, giving it a firm feel. Size: Approximately 12 x 18 cm. Please allow for some minor errors. Main fabric: Twill cotton Flap fabric: Oxford cotton Lining: Broadcloth cotton [Design by kcoton]