The Bosbag has been around a long time with a lot of knock-offs. This is the orginal. It's practically indestructible, stands open for easy loading and then folds down flat for easy storage. It is made from a heavy duty, tightly woven polyethylene. Mine is going on its ninth year. It's the first thing I grab when I go outside to "hunt and gather" for weeds and spent flowers. It's great for college kids who bring home their laundry It only weighs 10 ounces and has a 3.5 cubic foot capacity.