Concept2 SkiErg with PM5 Performance Monitor | Great for Upper Body and Core StrengthOriginally designed as a training tool for cross country skiers, the SkiErg has been embraced by the fitness community for its ability to work legs, core and arms in a smooth, continuous motion. With the same flywheel and Performance Monitor as our RowErg, the SkiErg offers a unique workout that will build your strength and endurance. The SkiErg is suitable for athletes at all levels and is easily adapted to those with lower body injuries. PM5,