NB HEAT technology helps keep you warm in cooler temperature while wicking away moisture

This makes the shoe functional for high-velocity sprints without slipping

and everything you need to get after it

Vibram® Megagrip with Traction Lug

With Altra’s signature FootShape fit

Women's On Cloudsurfer 2 Brand_Fusion NB HEAT technology helps keepOn's fan favourite Cloudsurfer 2, evolved. The On Cloudsurfer 2 features refined CloudTec Phase cushioning for a smooth ride for your daily runs. The upper boasts increased breathability, whilst maintaining a secure hold of the foot thanks to embroidered overlays for support. Finite Element Analysis was utilised when constructing the outsole to discover the most optimal geometry, granting runners the sweet spot between lightweight and durable.