Fun boot, great price.
This boot is got pretty good flex. Not too stiff, not too soft. My last pair of vans were a size 10, and this one was a little more snug than my last size ten, but its packing out. Boa system is pretty good, but I would recommend the boa focus system since you cannot tighten the two different zones separately with the single boa like you can with the focus system. This means that it might get tighter around the foot and not as tight up top around the ankle, but that was the only downside of this boot. Great boot for the price though.