I was looking for sunglasses to play golf, these will do the trick.  The tint is light enough so that the view is clear and bright.  Despite the severe curvature of the lens, I did not notice any distortion while walking and going up and down steps and ramps.  At first I thought the end of the frame arms were too tight above the ear, but with wear that feeling dissipated.  I don't think you can treat these roughly and expect them to last a long time, so I will try to treat them gently.