Kids' birthday cards come in several common sizes. Typical dimensions shown include 7" x 5", 6.75" x 4.62", and 5.5" x 4.25" (examples also list 4.625" x 6.75"). These correspond to standard folded card formats used by many retailers.
Many kids' birthday cards include playful or premium features such as pop-up or 3D elements, laser-cut details, vertical folds or A2 formats, and decorative finishes like foil or embossing. Bright printed designs are also common for child-focused themes.
Front messages often use action-packed lines, playful puns, or themed greetings tied to characters or interests. Inside text ranges from short celebratory wishes to fun quips; many cards are also offered blank inside so you can write a personalized note.
Most kids' birthday cards include the card plus an envelope. Variations may include individual wrapping, a removable note tag (on some pop-up cards), and envelopes with heavier stock or peel-and-stick closures.
Common accents include silver or gold foil, embossing, laser-cut elements, bright printed colors, and sprinkle-style foil borders to add shine and texture to designs.
Envelopes are usually included. Some are heavyweight and embossed with a peel-and-stick flap, while others are standard envelopes simply listed as included with the card.