On Running Women's Cloudspike Citius 2 Size:9.0 and a knit upper with

and a knit upper with a gusseted tongue is breathable

offering a fit range from a big M to a small XL

Deluxe package includes 32 spikes plus one precision ICESPIKE installation tool

Double-compartment mesh pocket for gels

updated design with premium technology to deliver the smoothest ride on the road

On Running Women's Cloudspike Citius 2 Size:9.0 and a knit upper withLITERALLY MEANS "FASTER." Unlock your fastest self in the Cloudspike Citius 2 and break barriers from 800m to 1600m. Engineered in collaboration with On Athletics Club athletes for lethal speed and precision, the Cloudspike Citius 2 combines Helion HF, a Pebax hyper foam, for supreme energy return you can feel with a unique half length Speedboard that is a blend of fiberglass nylon that catapults you forward. UPPER: One piece mesh is precision