Design your own 4 x 6 invitation cards online for your retail sale with our free 4 x 6 invitation card design templates. Custom online printing is fast and easy with our professionally-designed retail sale invitation templates. Use our design tool to pick a shape, edge design, and color scheme to match your brand, then add your own custom images and text. Retail sale invitation card printing helps bring customers to your sales event. If you already have artwork, visit our invitation card product page to get an instant price quote and upload your file.