I wore a pair of B3s for a couple months before I blew-out the toe with poor footwork and sharp granite. This has to be the most comfortable slash aggressive shoe I've put my foot in. I've worn other Acopa shoes, some Mad Rocks, and pair of 5.10s the were too big, and this was the first shoe that had no air pockets anywhere without cramping my toes.

The product link in the review is off, use this:

<a href="http://www.acopausa.com/product.jsp?navigation=3&content=1">Acopa B3s