Kitbuilder allows you to create product "kits" - products which are composed of other products and are all purchased as a group.
Kits a presented as a single product in the cart. On the product info page of a kit, the component items are listed, along with the discount (kit price minus the total price of all components).
Items which are eligible to be in a kit must meet these criteria:
Here's what a kit looks like on the product info page:
For more information, please visit this product's webpage.