These look pretty nice for the price, and you have larger sizes!
Can I ask though, dare I ask, what is a Back dump pocket? Is that what I think it is?
You know how a pull over hoodie has that shared pocket in the front, a “back dump pocket” is similar except it’s at the back and typically zippered. It’s like a thin, built in back pack just big enough to put a map or gloves into. I guess its advantage is that your stored items don’t bulk up the front of the jacket for people who need to bend over a lot for their work.