Bundles describe a set of specific products that are being sold. A unique code identifies each bundle within the market. The bundle name, description, and image URL are best suited for internal usage (Commerce Layer is not a CMS). Bundles are linked to manual SKU lists, inheriting the SKUs from there. A maximum of 5 SKU list items are permitted for each bundle.
Once an SKU list is associated with a bundle, its items cannot be added, removed or updated, unless you first destroy all of the linked bundles. Bundles have price_amount_cents and compare_at_amount_cents attributes: the latter can be specified or computed as the sum the SKUs, but is always guaranteed to be smaller or equal than the former.