I have only had it a week and on 1 trip, but it seems like heavy duty material and it's nice that it is water resistant so it doesn't get wet if it sits in the rain or snow for a little while. I like the square shape over a round duffle, it is easier to pack efficiently. The zipper is about 2 1/2 inches under the edge of the flap resulting in a few more seconds moving it out of the way to open and close the zipper, but that feature also keeps water off the closure so it has its purpose. Even the small one holds more than you might think. Overall I am happy with it.