On Running Women's Cloudspike Citius 2 Size:9.0 Ultralight - 50% lighter than

Ultralight - 50% lighter than silicone bands

Double-compartment mesh pocket for gels

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

terry elastic under the bust and tight fit for low- to mid-intensity training

and a knit upper with a gusseted tongue is breathable

On Running Women's Cloudspike Citius 2 Size:9.0 Ultralight - 50% lighter thanLITERALLY 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