This is a Hyperlight Mountain Gear (HMG) backpack. It weighs 2.5 pounds, and it is quite light for the capacity.
I want a larger capacity backpack because at times I will be packing a lot of water and a lot of food. Currently this brand is my favorite backpack brand but it was hard to choose in the train HMG and a backpack brand made in Utah called Ultralight Adventures (ULA). My problem is nothing ever feels uncomfortable so it is hard to make decisions. So, I went with a backpack that is lighter.