Outward is largely based on exploring the terrain and acquiring items. Your character carries not only weapons, but also large amounts of raw materials and items needed for survival. In the early stages of the game you will be constantly coming back to the city and selling your belongings or hiding them in the chest. However, after a few days you can buy a new backpack - Nomad Backpack
You can buy a new backpack for 25 silver at Shopkeeper Doran. You can earn money by completing tasks, selling caught fish or acquired items, or collecting silver from your debtors.
Remember, however, that people will be angry with you if you force them to give you their last savings.
Nomad Backpack allows you to carry a 50 kg load. Thanks to this, it offers twice as much space as typical version.
Remember, however, that this backpack also limits your movements during combat. Therefore, before every skirmish, put it in safe places so that it does not affect your chances of winning.