When upgrading the Casual Daypack, it goes from 18 capacity 70 encumbrance reduction, to 16 capacity, 60 encumbrance reduction for tier 1, 0 capacity and 60 encumbrance reduction for tier 2, and 18 capacity and 60 encumbrance reduction for tier 3.

Festive Alice packs also has an encumbrance reduction reduction from 87 for an non-upgraded bag to 85 for tier 1 to 3 bags

Hoffman's backpack, and odyssey gear travel pack also have there encumbrance changed from 1.0 for the non-upgraded bags, to 1.2 for the tier 1 to 3 bags