Joe H wrote a review of Sidi Genius 6.6 Carbon Speedplay Shoes on August 15, 2013
Familiarity: I've put it through the wringer
Very light shoes, comfortable and easy adjustability while riding. I've used Sidi mountain bike shoes for more than ten years and I can verify their durability. My last carbon road shoes were great but after getting these I realized how uncomfortable my previous shoes were. I have a B width size 12 and the 46 is a perfect fit. There is plenty of room in the toe box for my narrow feet.