Pre-order means that you are purchasing a product that is not yet readily available to be delivered.
You can see the expected shipping date in the product page of our online shop, before you place a pre-order.
For example, the Tenting Kit is currently in pre-orders, so in the product page you can see that the expected shipping date for the next batch is December 15th.
Tenting Kit pre-orders are eligible for 20% discount in add-ons, except for cables.