Long runs, smooth ride. Features: Double layer of CloudTec Phase™ for smooth runs; Helion™ foam optimized for softness; Rubber outsole for reliable traction; Lightweight, breathable mesh upper; Knitted tongue for comfort and lock-in; Revamped eyestay and tongue design for improved comfort. Materials: Recycled Polyester. Long-distance runs might not always feel easy, but these shoes make every mile enjoyable. With impact-absorbing cushioning to help your legs feel fresh, mile after mile and day after day.. We've doubled up the CloudTec Phase™ cushioning system for even more smoothness and impact absorption. And we’ve used Helion™ foam and a new midsole design to deliver an incredibly soft, max cushioned running experience.