The backpack goes on your back

Changed

• A backpack now goes only into the backpack slot of your equipment — the T1, T2 and T3 tabs are no longer places to stuff bags into. With no backpack you carry 10 slots of your own, and those stay with you no matter what.
• The backpack you wear adds its slots on top of those 10, and that is what unlocks the next tabs: a 20-slot backpack gives you 30 in total, so T1 opens up halfway. A tab you cannot reach yet stays greyed out.
• You can take the backpack off as soon as you free up the slots it pays for — things lying in your own 10 slots no longer stand in the way. Swapping down to a smaller backpack works the same.