2.5" x 3.5" Flat Cards - Variable Data PrintingTo order Variable Data Baseball Cards (or any sports) simply set up your files as follows: Create a multi page, black or color, 2. 75" x 3. 75" document with each card's content set up as front back front back etc. Save the file as a high resolution, multi page PDF file. Upload the file. For more information regarding VDP file setup, click here. Proof your artwork (you can view as many pages as you'd like). Complete your order. Art Size: 2. 75" x 3.