On Running Cloudflow 5 Trainers combine race-inspired propulsion and responsive cushioning for fast training sessions and short road races. Designed by On Running for a lightweight, breathable ride, they balance energy return with everyday comfort. Key attributes: Black | Engineered woven mesh | Responsive Helion HF cushioning | CloudTec cushioning elements for impact absorption | Glass-fiber infused Speedboard for propulsion | Durable rubber outsole with optimised traction | Lace-up closure for a secure fit | Forefoot grip for improved toe-off | Lightweight construction | Low-profile trainer silhouette | Rocker-shaped midsole | All-black upper with subtle patterned accents | Dimensions & fit: Weight: 231 g | Heel-to-toe drop: 6 mm | Stack height: 37 mm (heel) / 31 mm (forefoot) | Composition & care: Upper: Engineered woven mesh (nylon, polyester) | Midsole: Helion HF foam | Speedboard: Glass-fiber infused nylon-blend | Outsole: Rubber