A backpack can help you carry your stuff while you ride the skateboard, but the Concrete Native: The Action Sports Backpack can also be used to carry the board when you get to your destination.
This bag can carry longboards and even snowboards. It is made of an abrasive resistant material to prevent griptape wear and sliding, while the ergonomic backstraps make this comfortable to wear. There is a water bottle pocket, padded laptop sleeve and even “suicide door” side pockets to allow for quick access to those things you need to get at quickly.
Concrete Native: The Action Sports Backpack Kickstarter Site