Can the glasses be both fog free and reflective coated? If not, which one of these is more popular from your experience? From a return perspective, is there anyway to see if they fit prior to purchase? I'd love to make sure they're the proper size.

Unfortunately, you can only have one lens enhancement, you would not be able to have the Anti-Glare and the Fog Free coated lenses. Choosing a lens enhancement depends on your needs, one is not more popular than the other. If you work in an environment where you may experience reflections or glare from a light source the anti-glare would help with that. If you work in an environment that fluctuates in temperature causing the lenses to be significantly cooler than the surrounding air temperature you may want to consider the Fog Free coated lenses. We do not have a way for you to try the glasses on before purchasing them. When deciding which frame size is best for you, please review the measurements and weights indicated in the product's detailed description. These can be compared against the measurements from a pair of glasses or sunglasses you already own that fit your face well.