Need a birthday card for the nature lover in your life that is both simple and beautiful? The great blue heron is a striking and widely beloved bird-- and coupled with a superimposed mountain lake scene, it is the image of nature’s grace and beauty. Front: "Happy Birthday!" Inside: Blank. Size: A2 ( 4.25" x 5.5" ). Includes 100% recycled brown Kraft envelope. Packaged in a plastic sleeve. I chose substantial, luxurious card stocks (100 lb +) with a recycled content ranging from 10-100% for these cards. As of 2018, all cards are printed using plant-based inks!