Speed Evo R

Hoka One One has developed an asymmetrical track spike.
Debuting on the feet of Hoka-sponsored athletes competing at the 2016 U.S. Olympic Trials, the Speed Evo R has an asymmetrical construction the manufacturer says will give middle-distance runners better grip all the way around the oval—Hoka One One reports that “60 percent of a track athlete’s race is spent making left turns.”