Dave Cichonewrote a review of Sea To Summit Lightweight Dry Sack on August 6, 2016
Familiarity: I've put it through the wringer
I've been using these bags on my motorcycle trips for over a year.
Perfect for my sleeping bag which didn't come with a waterproof bag. I've ran it through countless rainstorms strapped to my bike where I've been soaked to the bone but I always get a nice dry bag at the end of the day.
They also work well as compression sacks if you get the knee press method down which helps a ton with pressing down extra clothes.