Cougar Fortress Gaming Backpack @ TechPowerUp
 

Cougar’s Fortress backpack has a nice price tag and is quite large. It features three ergonomic, padded panels on its back, and the shoulder straps are padded as well. Since it can be held in four different ways, it will easily adapt to any occasion. The only downside seems to be that it is not water resistant, but you cannot be too picky at this price point.

https://www.techpowerup.com/reviews/Cougar/Fortress//