I own multiple dry bags and love this one because of its sturdiness. My siliconized nylon ones, I am always a little hesitant to put outside my backpack or throw around in a canoe because they might tip. This tough material is really abrasion resistant and therefore I strap it outside of my pack if needed. The loops are perfect for holding it in place. I also used it to strap it on my bike rack on top of the panniers. I chose the bright orange color that makes it easy to find in camp.
The only slight downside - it is a bit heavier than the other dry bags, but really, its sturdiness makes up for it.