The INVENTORY can be found in the PACK SHOP and is where you can find all of the items you have collected from packs and bonuses. For example skill activation items, boosts and customisation items.

From here you can also sell any unwanted items or COMBINE them to create more powerful items.

You will need 3 combinable items (e.g. BOOSTS) to upgrade them. For example 3 BASIC boosts can be combined to create 1 PRO boost