Photographer's Edge, Photo Insert Card, Natural with Happy Birthday, Set of 10 for 4x6 Photos Patented Photo Insert Card for landscape(Horizontal) & portrait(Vertical) photos 10 matching Natural envelopes included Blank inside, window opening is 3-5/8" x 5-5/8", finished card size is 5" x 7" Natural Cardstock, Amazon Green Ink Made in the U.S.A. with recycled paper and printed with soybean based inks