Things I liked: They are cheap and they work, better than the sophisticated goggles that form a seal around your eyes and then attempt to introduce "ventilation" and an "anti-fog" coating. They are comfortable, and easy to put on and remove. Highly recommended if you want to buy a bunch of goggles for a bunch of people.
Things I would have changed: Nothing. They don't seem to be very durable, but then again they're very cheap so you can easily replace them.