A premium experience for the most demanding sprinters, the Sigma Harmony was built for 60m to 400m. Built on a new plate, this model provides a smoother and more powerful transition than its predecessor. A sleeker upper with a BOA fit system and knit heel reduces weight for a second-skin-like fit that's ready for pure speed. Knit upper with breathable mesh to keep the air flowing when you pick up the pace.
Dial into Fast, Effortless, Precision Fit with the Boa Fit System.
8 spike configuration provides optimal traction.
Removable spikes for easy replacement.
Bootie upper construction hugs your foot for a snug, supportive fit.