Worn a handful of times. Simply not for me, but popular amongst many! The Cloudflow makes elite-level technology accessible to any runner. CloudTec® in ultralight Helion™ superfoam combines for a fast, responsive feeling with fully cushioned road protection. The engineered mesh upper offers a reassuringly secure fit whether you're training or racing. Weight: 198g Speedboard® shaped for high speeds Re-engineered upper for seamless comfort Grip rubber and traction pattern for enhanced grip Ultralight Helion™ superfoam combines speed with comfort The heel cap fit is now even more precise Evolved CloudTec® outsole for optimal performance Road run, mixed distance, ultralight. Support Type: Neutral. Cushioning: Lightweight, flexible response. Surface: Road. Differential: 9 mm. Adaptive engineered mesh provides breathability and support. Lace-up closure. Lightly padded tongue and collar. Breathable fabric lining. Removable foam insole. Speedboard within the Cloudflow features a responsive flex and rocker that promotes the natural rolling process and explosive takeoffs. CloudTec® outsole has 18 individual pods that cushion and propel your run.