What's the difference between sport sunglasses and regular sunglasses?

[Grafton]

What's the difference between sport sunglasses and regular sunglasses?

[Grain Valley]

I think the most important difference is that sport sunglasses can stay on your head firmly when you are doing physical activity such as running,playing basketball etc while regular sunglasses may fall off. Also the sports sunglasses have a better resistance to external hit to protect your eyes.

[Grainfield]

Sports sunglasses have smaller frames than the regular ones.They are used for sports,and the regular ones are used only for decoration.