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ON / Cloud X 4
From Swiss running brand “On,” we introduce the latest model in the Cloud X series: the Cloud X 4.
Built around the brand’s proprietary “CloudTec” system, it delivers soft landings and smooth, comfortable movement. It provides ideal support for indoor workouts and running.
Beyond performance, its design is another key appeal. Minimal and refined, it works not only for running but also as a fashion-forward piece that fits naturally into city life.
black
ivory
black
ivory

ON
Founded in Switzerland in 2010. Winner of the ISPO BrandNew Award, one of the most prestigious honors in sports innovation. A footwear brand trusted by over 3 million runners across more than 50 countries.

Reduced water usage
The upper is made from breathable recycled mesh material. The yarn used in the upper is dyed using a dope dyeing process, which reduces water usage by up to 90% compared to conventional methods. This technique is widely adopted across other On footwear as well.
The side structure wraps the foot for a secure fit, while the star-shaped lacing system helps minimize foot movement and enhances lateral stability.
CloudTec
On running shoes feature the brand’s proprietary “CloudTec” technology.
Multiple hollow “Cloud” elements are arranged in the sole, each compressing individually to enhance cushioning.
In the Cloud X 4, these Cloud elements are made from “Helion SF,” a proprietary material that maintains structure without fully collapsing, offering both responsive rebound and superior cushioning.
More speed with the same effort
The sole is equipped with an X-shaped plate known as the “Speedboard.” By incorporating nylon into the structure, it allows the forefoot to flex naturally while guiding the foot into an optimal push-off position at landing, supporting an efficient running form.

Beyond performance, its refined design is another key appeal. The minimalist and sophisticated aesthetic makes it suitable not only for running, but also as a versatile piece for everyday city wear.

SIZE
※Check out the size guide for more accurate measurements.
Staff comment
| ●Staff (165cm / 52kg) Usual shoe size: 25.5cm Wearing: 8 / 8.5 Size 8 offers a snug fit and may feel slightly tight with thick socks. Size 8.5 provides a comfortable amount of room even with thicker socks, resulting in an easy and well-balanced fit. |
| ●Staff (171cm / 61kg) Usual shoe size: 26.5cm Wearing: 8.5 / 9 Size 8.5 had enough room in the toe box, but felt narrow across the width. Size 9 offers a more comfortable overall fit without any tightness. The width runs slightly slim, so if you are concerned about fit, going up one size is recommended. |
| ●Staff (177cm / 67kg) Usual shoe size: 27.5cm Wearing: 9.5 / 10 Size 9.5 provides a clean, just-right fit without feeling tight. Size 10 offers a bit more room overall for a more relaxed and comfortable feel. If you prefer extra ease, size 10 would be the better choice. |
SPEC
| Materials | Upper: Nylon Mesh / Sole: EVA |
|---|---|
| Country of Origin | VIETNAM |
| Care Instructions | ※Please note that the colours may look different from the real thing depending on your monitor environment. |
| Weight | 800g |
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