I've worn Specialized Body Geometry shoes for several years, but they always pinched my toes a little, and the Boa dials always seemed to slip a notch or two while riding. I hesitated. going back to using Boa clasps in my experience with Specialized shoes, but Boa dials on Sidi Genius shoes are so much better! They're not as prone to slipping and there's a release button so you don't have to turn the boa's handle against the ratchet to loosen it. These are the most comfortable cycling shoes I've ever had.