Sunglasses are a standard clothing on a bike ride.
A sunglass suitable for the bicycle sport must be stuck and non-slip on the face.
The bike glasses should be able to keep up in different environments while protecting your eyes in eg. forest terrain. A bicycle goggle ensures that you can properly orient yourself regardless of whether the sun shines a lot and you also avoid getting insects in your eyes.
And then it does not matter to look smart.
Sunlooper.co.uk has a wide range of sunglasses suitable for bicycle sports.