This happy hippo is sure to add joy and delight to anyone's birthday! Front: Happy Birthday! Inside: Blank Size: A2 (4.25" x 5.5") I chose substantial, luxurious card stocks (100 lb +) with a recycled content ranging from 10-100% for these cards. Cards are printed at a wonderful family-owned print shop here in the San Francisco Bay Area. Each card comes packaged in a plastic sleeve with a 100% recycled brown Kraft envelope. Made in United States of America.