Storing luggage for day/Stockholm

[Boobila]

We will be in Stockholm on the Ultimate Scandanavia Cruise June 16, 2016 and have about 8 hrs. once we get off the ship until we need to go to the airport. We are wondering if anyone can tell us what we can do with our luggage so that we can enjoy the day without hauling it around? The airlines won't allow us to leave it early. Are there any storage places, etc. that anyone knows about.

Thanks

[CapeCodCruiser]

There are left luggage lockers at the Central Train Station. When you are ready to head to the airport you can grab your bags and catch a train - 18 minutes to Arlanda