Bundles are an easy way to group a set of products together to expose their data as a whole and use it in your Storefront. Common things that you can do with bundles are to create a set of products to add them all to the cart. Or use it to group products to use inside an upsell experience.
Creating a Bundle
In the admin, go to Products > Bundles.
Select Create Bundle
Name your bundle, give it a description, and then search and select products you would like in your bundle.