Overview
- On previewed the Cloudboom Strike 2 and the lighter LightSpray Cloudboom Strike 2 at its Zurich briefing on Friday and set a formal retail launch for July 30 at on.com and select premium partners.
- Both models use a redesigned CloudTec Sphere cushioning geometry and a revised Helion hyper foam that On says is 15 percent lighter than the prior generation midsole.
- The LightSpray variant weighs 158 grams and uses a seamless, laceless one‑piece upper sprayed by robots while the standard Strike 2 weighs 191 grams and uses a mesh upper.
- On cites a University of Cape Town study that it says shows a 1.6 percent running‑economy gain for the LightSpray model and reports multiple athlete personal bests, but the published coverage notes those validations come from company‑sourced summaries with limited methodological detail.
- On has moved to scale LightSpray production with a Zurich facility opened in 2025 and a second plant near Busan opened in April 2026, a step that could let the company speed manufacturing and expand robot‑built uppers into more consumer models.