On Running's Cloudboom Volt is a speed-focused running trainer built around a tall rocker midsole and an internal Speedboard plate for a propulsive stride. It balances responsive performance with a lightweight, breathable mesh upper for fast road sessions. Key attributes: Black | Black white | Technical mesh | Lightweight | Breathable | Responsive midsole with internal plate | Propulsive rocker geometry | High-stack foam for drive | Gusseted padded tongue | Structured heel counter | Fabric pull tab | Lace fastening | Large silver arrow logo on forefoot | Grey SWISS ENGINEERING midfoot panel | RUNNING wordmark on heel | Monochrome black and white with silver accents | Low-top design | Dimensions & fit: Supportive, locked-in fit | Low-top silhouette | Suited to tempo runs, road racing and fast training