LightSpray™

Lighter than humanly possible

Our lightest ever race shoe made for serious speed.

coming soon

The LightSpray Cloudboom Strike

Ultralight super speed for race day.

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Athlete approved and performance proven. The LightSpray Cloudboom Strike is engineered for your fastest competition run yet. Featuring a 30g upper and a double layer of Helion™ HF hyper foam for maximum propulsion on race day.

Most shoes take hours to build and many human hands. LightSpray™ takes just three minutes to engineer an upper with a single robot arm. The revolutionary assembly process minimizes waste, eliminates the need for glues and produces 75% less CO₂ when produced at On Labs Zurich, compared to other On racing shoes. Learn more about LightSpray™

LightSpray™ on the world stage

Worn by the world’s best and tested under race-day pressure, LightSpray™ is delivering wins, podiums and historic performances.

Hellen Obiri first pulled on LightSpray™ in 2024, winning Boston and claiming podiums in Paris and NYC.

In 2025 she took almost three minutes off the New York City course record with a 2:19:51 finish.

Sutume Asefa Kebede dominated Tokyo, claiming back-to-back marathon victories in 2024 and 2025.

In 2025 Kristian Blummenfelt won European and North American Championship titles in LightSpray™, before Gustav Iden took silver, and Blummenfelt bronze, at the World Championships in Nice.