On Running Cloudboom Volt is a performance running shoe from On Running. It features a Combo cushioning system with Helion foam designed to deliver responsive cushioning for road running. Key attributes: Black | Black white | Helion | Cushioning system (Cush Syst Combo 2 Lay) | Helion foam midsole | Designed for running | Cush Syst combo cushioning | Two-layer midsole construction