There are three ways to classify Items: Merchandise, Packaging, and Promotional items. Most Items are Merchandise, imported directly from your Shop and syncing. Packaging and Promotional Items don't need to be created in your Shop, since they are not directly sellable, and could be created manually.
AKA sellable, merch, product, goods. If an Item is not Packaging or a Promotional Item, it's Merchandise.
If your merchandise is already packed in its own container and will not need extra packaging, you can mark it as such:
If your merchandise comes in case or carton quantities that can be shipped and received without being opened you can indicate those values:
International shipments will not clear customs without price data. This value is inherited from Orders by default.
Promo Items are throw-ins that have negligible weight and value—like stickers or flyers—that you would like added to orders in certain circumstances. Insufficient inventory of promo items will not stop an order from shipping.
You can learn more about promotional items here.
This is the actual shipping container that your order will go out in. For carrier rate purposes it is extremely important this is classified correctly. Each order should only have one packaging item unless there are multiple packages, each with their own shipping label, that need to be shipped. The packaging label is what finalizes an order and triggers the shipping label purchase and rate classification.
You can learn more about packaging here.
It is important to identify your packaging correctly to ensure proper carrier rates are applied, whether it be a box, polybag, or bubble mailer. Even a customer-owned box should receive the packaging type "WhiplashBox". Using carrier-specific box types will prevent Orders from shipping with other carriers.