On Cloud Cloudswift Helion Womens Running Shoe Sneaker Lake Sky White Size: US 8.5 Condition: New without Box Support Type: Neutral. Cushioning: High energizing cushioning. Surface: Road. Differential: 7 mm. Engineered mesh upper for superior breathability and easy stretch. Silicone cage molds comfortably to the shape of the foot. Cushioned foam insole for long-lasting underfoot comfort and support. Full-length Speedboard construction distributes pressure evenly across Cloud elements. Helion super foam midsole is lightweight, bouncy, and offers excellent energy return. Temperature-resistant technology allows it to keep its shape no matter if it is cold or hot outside.