Why does Mats Hummels cut holes in his boots

Play FootballTeam In his top form, Mats Hummels has been considered one of the most solid defenders in the world. Brilliant at breaking down opposition attacks and starting counterattacks. He has also scored some important goals and assists for hs team. He was able to do it all while having some unique modifications on his boots. The keener observers amongst you may have noticed something really unusual about the Germans match boots. Source: