You may have seen the Smartefy being ridden this summer by no other then Tom Wallisch and now you can get them too.
The Smartefy is better suited to medium to small faces but the combination of a frame keeping the lens close to the face with a frameless design at the bottom offer a great field of view.
They have a spherical lens featuring Shred's NoDistortion technology, basically a small valve which regulates the air pressure between the outer and inner lens to give the perfect optical clarity no matter the altitude.
I'm not personally a fan of frameless goggles, I find they often give an almost tunnel vision with the lens so far from the face, but a frame can have the disadvantage of restricting the view at the bottom.
Shred have gone for a combination of frame at the top and an open bottom similar to the Smith Io. The field of view is excellent and I never found I was wanting a larger overall goggle.
The lens I was testing was the Dark Fader and although almost completely black it offered an excellent amount of contrast, far better then most black lenses I have used. From overcast to bluebird there was not a condition the lens could not handle so if a black lens is a high priority then these are probably the best you will find.
The fit was comfortable and the foam on the face was soft and never too warm even in the spring. I never suffered any steaming issues and overall I was very impressed.
If you are after a goggle with a dark lens then these are a great option.