S5 Pro is a complete new skating ski with extended length versus the S5E ski. The new frame is lowered for perfect ski feeling and stability. The S5 Pro features new lighter wheels with medium rolling resistance and fenders with reflective elements for better visibility. Swix Skate S5 Pro is an excellent ski for professionals as well as recreational use. This S5Pro has exceptional maneuverability and is the lightest ski in its class!