This baseball birthday invitation is a game-day poster in varsity red, white and navy. The card art leads with PLAY BALL lettering and a stitched baseball, and the guest page keeps the ballpark voice through every layer. The honoree name is set in extra-bold Bebas Neue caps the way the artwork sets it, the invitation itself sits in a white mat ringed by a red double-stitch with diamond corner marks, a FIRST PITCH stamp and a hanging GAME DAY PASS tag. The page ground is a bright morning at the diamond where sun shafts breathe, golden dust motes rise and red and navy pennants wave. The countdown to the party is one long ticket strip whose four cells — notched like an admit-one pass — hold baseballs above scoreboard digits that flare red with every tick, and the page closes on a pennant stage in varsity red with a white home-plate seal and a squishy RSVP button. It is built for a fourth birthday — or any little slugger — and suits baseball, sports and game-day celebrations where the theme is the diamond rather than a place. Sending the digital invitation includes the animated guest page with the countdown, a location map with directions, an add-to-calendar link, and a reply form that lets guests answer yes, no or maybe in one tap. A tip for hosts: the countdown, venue and RSVP date personalize themselves from your event details, so the page stays in step with your plan from the day you send it.