It is a pocket type, so you can simply insert a photo to set it. It has 2 sides that can store 2 postcard size photos in a horizontal position. Made of paper, light weight, can be displayed as is. This product is for a postcard size (4.0 x 6.0 inches (102 x 152 mm).Not for use with large size (3.5 x 5.0 inches (89 x 127 mm) or 2L size (5.0 x 7.0 inches (127 x 178 mm).?