Boom. That's the sound of another PB or record breaking. On's Swiss engineers worked hand-in-hand with elite athletes to sculpt the ultimate marathon running shoe... Welcome the Cloudboom! Fitting instantly to your foot and staying comfortable over long-distances, the twin CloudTec® cushioning and a carbon-fiber-infused Speedboard® will propel you straight to the finishing line of your fastest ever marathon ever. Boom.
On Cloudboom Features
Double level Cloudtec®
On Cloudbooms incorporate a unique double layer of Helion Superfoam CloudTec®, with one layer of Cloud elements sitting above the Speedboard™. This upper layer of Clouds adapts to the underfoot, resulting in optimum comfort and performance.
The Cloudboom Speedboard® is an explosive combination of carbon fiber and TPE materials to optimise efficiency over long distances. The extreme rocker shape of the bottom unit translates the natural motion of the foot into propulsive power.
Traction you can rely on
The optimally redesigned traction pattern on the sole is constructed in a new grip-rubber compound which works with the natural rolling motion of the foot. Power through wet urban courses in confidence.
Engineered mesh upper
The ultra-lightweight single layer engineered mesh upper gives the very best breathability. Combined with reinforced side sections for additional forefoot support, your feet will thank you right through to the end of the race.
Fast marathons, road races between 10–42.2km, long-distance intervals
Distance per Run
Medium - Long
Direct / Moderate
Hoka Carbon X | NB Fuel Cell Rebel | Saucony Endorphin Speed
Cloudboom Technical Info
A single layer of ultralight engineered mesh keeps weight low while increasing breathability. Reinforced sections at the forefoot hold the foot for fast cornering on the sharp turns of city courses.
Twin layers of CloudTec® in Helion™ superfoam provide both instant adaptive fit and long-distance responsive comfort.
The explosive carbon-fiber infused Speedboard® increases efficiency every step and explosive kick when needed.
An updated traction pattern in a new rubber compound delivers enhanced grip.
UK 3 - 9
220g (UK size 8)
2-3 working days for White | Black in sizes 8 - 12
Other colours and sizes are available - please contact us on firstname.lastname@example.org to enquire