Gradual ramp angle promotes proper running posture

On Cloudboom Strike LS

Ultralight speed. Engineered for the future.

The Cloudboom Strike LS is built for athletes chasing serious pace. With On's lightest-ever LightSpray upper, dual layers of Helion HF hyper foam, and a spoon-shaped carbon Speedboard, its designed to deliver maximum propulsion with minimal weight. A seamless, second-skin fit combines cutting-edge sustainability with race-ready innovation for performance without compromise.

Details

• Weight: 170g
  
• Offset: 8mm (heel-to-toe)
  
• Stack Height: 37mm (heel) / 29mm (forefoot)
  
• Cushioning: Helion HF hyper foam (over 40% bio-based)
  
• Upper: LightSpray seamless construction
  
• Outsole: Rubber with increased ground contact zones
  
• Sustainability: Upper emits 75% less CO vs. premium alternatives

Features

• LightSpray technology: seamless, second-skin upper made from a single filament
• Lace-free, distraction-free fit with just 30g of upper material
• Over 40% bio-based Helion HF hyper foam for cushioning and rebound
• Spoon-shaped carbon Speedboard for energy transfer and propulsion
• Dual layers of Helion HF for impact protection and responsiveness
• Maximized outsole traction with increased ground contact
• Sockliner-free design to increase foam content and reduce weight

Ideal For

Runners chasing PRs with a carbon-plated super shoe that blends speed, cushioning, and sustainable innovation. Best for marathons, half-marathons, and high-intensity racing where every gram and every second counts.

Multi layer mesh accelerates moisture evaporation in humid climates.