When visiting War Machine Marketing, you'll notice this symbol attached to some products: 

This symbol means that a product is Virtual Sample Enabled. When viewing a product with this symbol, you can upload your own logo to get an idea of how it may look on a particular product. When you upload a logo to a product it will carry over to all products that are Virtual Sample Enabled.

To view a product with a different logo, just reset and start all over!

To get started, click the Create Virtual Sample button under the image on the product page. The Virtual Sample screen will appear, and you can follow the onscreen instructions. See example below: