The X-KDs fit perfectly. I cant speak to the originals, as I have never owned the normal KDs, but for my adult male head, I cant find one issue with fit. They have amazing build quality, definitely do not feel cheap so top notch there. The best thing with these glasses is they fit the head, no way for these bad boys to fall off or move around when angling the head down or to the side. PS> Shipping to Canada was fast too!

The X-KDs are perfect! Those extra milimeters makes all the difference. Relatively quick delivery I live in Norway...

Ive used other glasses for riding, glasses that cost over 10 times what I paid for these and NOTHING comes close to the look, the feel and the performance of my X-KDs!! I have a dark pair for day and a clear pair for night riding and they are the best! I had no problem ordering and they were delivered to my house in a matter of days...Im a customer for life!

Bought as a back up pair. Still using my orignal kds smoke lenses. Very satisfied with those

LOVE THESE, BEEN WEARING THEM FOR YEARS, GOOD QUALITY AND GREAT VALUE