As you'd expect from a double cup, you really can't beat the protection offered here. The cup has been tested a few times and I really haven't felt a thing. Pretty happy about that!
The only downside is that it's kind of bulky - to the point where it has worn a hole in the gusset of my pants (at the seam). Also, every now and then I find that it gets pushed down as I bend over in my stance, and then the bottom of the cup prohibits me from closing my pant thighs together.
Overall though - really good cup.