Felix Doolittle Cards. Printed on a beautiful stock, occasion cards feature Felix's watercolor drawings, his handwritten font, and witty sayings that are positively charming. The quality envelope is the finishing touch. 4.25 x 5.5 inches folded. Ultra-premium, lightly-textured acid-free paper stock. Packaged in a cello sleeve. Handmade in the USA. Front: happy birthday.