On Running On Cloud X 4 'black Eclipse'

Buy the Cloud X 4 in your normal size. On lists it true to size, the sock like upper needs no break in, and heel, midfoot and toebox all fit standard. Use it for HIIT, circuit work, treadmill sessions and 5K efforts, exactly the versatile training brief it was built for, and keep it off longer road runs where the cushioning runs out. The other limit is real: lab testing found it very unstable laterally under load, so do not take it under a heavy barbell. Two ways to wear it outside the gym: black tapered joggers with a black tee for the monochrome On look, or wide grey sweats with a white tee so the eclipse overlays read as texture. Rinse the mesh, air dry it, and clear debris from the CloudTec pods so the grip stays honest.

On went from a garden hose experiment to a New York listed company in barely a decade. Roger Federer came in as a shareholder in November 2019 and The Roger launched in July 2020, which dragged the brand out of the running specialist lane and into general wardrobe territory. The 2021 IPO raised around 746 million dollars, and by 2024 On was doing CHF 2.32 billion in revenue, up nearly 30 percent year on year. The Cloud X sits right at the centre of that crossover, a real gym shoe that people wear all day. Black Eclipse is the colorway that makes the crossover work, because a fully blacked out On reads as a sneaker first and a trainer second.

The upper is black mesh built from at least 90 percent polyester with tonal eclipse overlays, and it scores a perfect five out of five for breathability in lab testing, which matters more in Indian heat than any marketing line. Underneath, Helion superfoam handles the cushioning: soft on landing, light, and durable enough to hold its shape. The X shaped Speedboard sits between foam and outsole, rigid through the middle for stability on lateral moves, flexible at the forefoot so toe off stays explosive. The CloudTec pods collapse on impact then lock together into a firm platform to push off. A dual density sockliner finishes the ride. It weighs roughly 268 to 288 grams depending on size, with a 7mm drop.