Checkout Components enables merchants to select products from their Shopify catelog to display as upsells on their checkout. Bstore uses this feature to upsell a common products related to shoe care. In this example, they are upselling a cork shoe renewing product which is shown to customers if their cart contains a pair of shoes that is made of cork material.
It is important to Bstore that customers are aware of their exchange and return process and policy. The effectively convey these messages to their customers during checkout, they use a variant of Content Components called "Callouts".
Checkout Components is available for all Shopify Plus merchants via the Shopify Appstore.