Step 1: Click on the "Select Bundle" button and select the bundle you would like to build.
Step 2: Now add the patches you would like to have in your bundle by clicking the "Add" button, clicking on the add button once will add that patch once, clicking on add button multiple time will add the product multiple times, for example clicking on a specific patch 5 times will add five of those patches to the bundle.
( To remove an patch from the bundle click on the close icon above the patch )
Step 3: Pick the required quantity of patches and then the Add to cart button will appear letting you purchase the bundle for a flat price.