Very comfortable fit over my prescription glasses.  These do a great job of taking out the glare.  Very pleased with the clarity of vision I get using these glasses.  Prior to getting them I had clip-on sunglasses that not only distorted my vision somewhat and I had to deal with the distraction of the clips.  These sunglasses eliminate this problem so well I tossed the clip on sunglasses after my first day wearing these wraparound sunglasses.  Very pleased.  I ordered the night version of these from Duco and they too are just as good.  Well done, Duco!  Enthusiastically recommend these glasses.