ttsg on 11/14/2013
Butterfly Energy Force XI
Overall on par with Energy X on gripping, but the shoe tonged area a bit too tight for comfort. which result uneasy feel during movement.
After some intense wearing for training, it appear that XI having some design issue with the shoe tongue area that making it too tight for comfort. It added extra pressure to your upper feet. Other than that is make no different with Energy force X.