I have one similar
I have a version of this one with an Air Purge valve in it. It you want sturdy and dry with the ability to see inside, this is the way to go! These bags are VERY Durable, and can deal with a lot. The only reason why it gets 4 instead of 5 stars, because its rubbery, it doesn't slide in and out of a backpack very well. Other than that, I have been living out of mine for 4 months, and use it everyday!