Cloudswift GLACIER/WHITE Helion™ superfoam CloudTec® in Helion™ superfoam gives the Cloudswift cushioning with zero compromises. Engineered for urban running, Helion™ is light on weight but big on energy return and durability. Temperature resistant, it provides the same unrivaled performance in hot and cold conditions. Durable rubber reinforcements provide high traction at high speed, even on wet roads. Materials Urban Upper The breathable engineered-mesh of the inner sock construction keeps your feet cool, even when on-the-road temperatures soar. Strong yet stretchable, the TPU mechanical side band delivers gentle midfoot support during swift city sprints. It also gives you a hiding place to stash your laces. Design The Shoe to Run the City The city is a tough place to run. So we made the Cloudswift tougher. With CloudTec® in Helion™ superfoam, it's made to perform on hard surfaces and protect from impact. This is cushioning without compromise – with an engineered upper to match. From a swift 5k at lunchtime to a cross-town commute or the longer Sunday run, you'll feel the difference when you hit the streets in the Cloudswift.