Buy online Ski Rossignol - Hero Athlete GS Pro (R21 Pro)The Hero Athlete GS Pro is a Super G race ski for children from U10 to U16. Our Line Control technology and race-ready design optimize precision, balance and power, and feature a progressive flex coefficient that adapts to kids' size and helps them be more competitive.Ski Rossignol - Hero Athlete GS Pro (R21 Pro).