We have two pair for Mojo (LilyGrace has one pair, as of now). Mojo started out with the actual Goggle type because at the time, we did a lot of travelling in our Jeep (top off) and on the 4 wheelers. So, these were needed to keep the wind, dirt, sand, bugs, etc out of his eyes...and they worked soooo well!!! I love them. We do not do much of that, if any, anymore, but we still have the goggles, just in case.
Now, we have the ones that look like sunglasses...you know, the little cute pink or tan ones. I wouldn't recommend those for a motorcycle ride

but they are extremely cute! To be honest, neither one of mine wear their "fashion" doggles much, except for the ocassional outing where I think she should be on top of the latest fashions

or for pictures.
But, if you are needed something for a sport (motorcyle, Jeep, anything where the wind, dirt, etc are an issue), I really recommend the Doggles that are more of the goggle type. Mojo has the one w/ skulls on them