Maximum print area for designing

The boxes you see in the Design Lab are the printing area constraints, which show the maximum size your design can be to ensure a high quality print that's not compromised by the seams of the shirt. You'll find similar boxes in the Lab when designing on any of the products offered on If you’re having trouble keeping your design within your item’s printing constraints, consider making your text and/or art a bit smaller. Adult unisex and youth shirts are shown in the Design Lab on a size large and ladies shirts are shown on a size medium, so your design will actually appear larger on smaller sizes (read more about this here). Also, try selecting all elements in your design and clicking the “move to center” button. This will move your design to the center of the printing area and give you more room to work.