Gobbiebag

This is your inventory that stays available to you no matter where you are. Basically it's a spacious backpack that you carry with you while you're exploring Vana'diel.

When you start the game it can carry a maximum of 30 items. You can upgrade this amount to 60 through a series of quests:
 * The Gobbiebag Part I
 * The Gobbiebag Part II
 * The Gobbiebag Part II
 * The Gobbiebag Part IV
 * The Gobbiebag Part V
 * The Gobbiebag Part VI

You can also keep items in your Mog Safe or in Storage. You have to go to your Mog House to access these items though (to access Storage you have to go to the town you are allied with).