On’s Lightest Super Shoe Yet Features Its LightSpray Upper and a New Foam System

June 26, 2026

On is continuing its mission to dominate long-distance racing with the second generation of its marathon winning Cloudboom franchise.

Previewed earlier this week at the Swiss company’s Zurich headquarters, FN got a first look at the new Cloudboom Strike 2 and the LightSpray Cloudboom Strike 2 super shoes, engineered for marathon racing at the highest level.

In its second generation, the Cloudboom Strike introduces a new evolution to On’s proprietary CloudTec foam engineering system. Called CloudTec Sphere, the foam features engineered cushioning channels “designed to enhance comfort and optimize running efficiency,” the company noted. The system is complemented by the Helion hyper foam (HF) midsole which is 15 percent lighter than the first generation of Cloudboom Strike. The overall race-day shoe weighs 191 grams.

As for its much lighter sister shoe, the LightSpray Cloudboom Strike 2, comes in at 33 grams less than the Cloudboom Strike 2 at a total of just 158 grams, its lightest shoe to-date. The seamless, glueless, one-piece upper technology that On launched in 2024 helps keep the weight down in this new model. WOMEN’S WEAR DAILY