Size
The finished card is cut to 2.5 by 3.5 inches, the standard that sports cards and most collectible cards share. Accessories are built around that size, and a card printed to it fits them without trimming or forcing.
Thickness
Fit is also about thickness. Snapshot cards print on trading card stock at standard card thickness, so a top loader or a one-touch magnetic case closes on them the way it does on a retail card. They are not thick relic-style cards that need oversized holders.
What ships with the card
Every Rookie Box includes one one-touch magnetic display case, and cards ship in protective sleeves inside a rigid mailer. If you want each card cased, add extra magnetic cases in the cart at $1.99 each. For binders and long-term storage, ordinary sleeves and pages work.
The exception
A MEGA Card is 11 by 15.4 inches and does not fit standard accessories. It ships in a fitted protective sleeve made for its size.