Boutique Cards are uniquely shaped; you can choose from Basic Shapes, Curved Shapes, Geometric Shapes and many more. There are even options for cut out windows in some of the styles.Boutique cards are available in flat, folded and tri-fold formats.Available sizes are 3x3, 4x5.5, 5x7 and 5x5. Paper surfaces are linen, pearl, standard and magnet.