Compare prices on Women's On Cloudswift 2 Running Shoe Score On Running Cloud Cloudswift 4 AD (Various Colors) Women's Shoes eBay On Women's Cloudswift 3 Running Shoes SportChek Cloudswift 4: Women's Everyday Running Shoe On United States. Introducing the On Running women's Cloudswift with Helion: an active superfoam that doesn't tire. Helion is a lighter, softer, and more agile foam that's made to perform on hard surfaces and protect from impact. Temperature resistant and durable with high traction at high speed, even on wet roads. Cushioning without compromise with an engineered upper to match. Upper Engineered mesh for the perfect comfort balance of hold and stretch. Sock construction for easy step in and comfort. Mechanical side band adds support. Midsole Speedboard: Speedboard stablizes the foot throughout each phase of the rolling motion while also propelling push off. Helion: The unique new Helion foam won't tire before runners do, thanks to a special blend of hard and soft materials. Its enduring energy return properties offer protection from the road, performance for the run. Outsole Rubber Reinforcements: Durable rubber reinforcements on the Helion foam Cloud elements provide enhanced traction to come to grips with high tempo training, even on wet roads. Heel N A Forefoot N A Offset 7 mm Width B Weight 8. 5oz (240 g)