This is a product that has an upsell with OPTIONS on it.
Bold Upsell is the only Upsell app for Shopify that allows you to have customizations inside the Upsell offer. The does require the Bold Product Options app as well to make this possible.
Stores that offer good complementary products see up to 40% conversion on their offers!
Go ahead and click Add To Cart and then click CUSTOMIZE IT. You can of course edit the button text to be anything you want as well :-)
Can you imagine how you could use that in your store?