Pioneer Bi-Directional Spiral Bound Photo Album, Random Designer Series Covers, Holds 300 4" x 6" Photos, 3 Per Page The same pockets hold horizontal or vertical prints up to 4" x 6", plus panoramic. Archival quality paper and plastic: Acid, Lignin and PVC free. Optically clear pockets with shaded background enhance the look of any size photo. Memo area next to each pocket. Micro-static slip-in pockets protect and hold photos in place.