Speed - Build for Speed! Developed for quick workouts and competitions, Speed has already received several awards during their launch season and become many runners favorite. An example of this is Runner's Worlds 2017 Fall Shoe Guide where the Speed6 to "the easiest and flexible shoe in the current wizard". Speed is equipped with the newly developed interleage material Recoil ™ - a shock-absorbing lightweight FOAM provides better energy reproduction. To further improve the shock absorption in the heel, a softfoam area has been entered in the middle of the heel part, a material that has 70% better shock absorption capacity than standard Eva. The black graphic pattern on the shoe's top shines in the rainbow all colors When the headlights shine on them on evening or early morning.