Stair Stepper w/Handlebar, Extended Step Range Climber Machine for Legs, Core and Glute Workouts, Connection with Free SunnyFit App. 【BALANCE-ASSIST CORDS】Great for all fitness levels and beginners. 【FULL-BODY CLIMBING WORKOUT】Body-weight step training mimics natural vertical climbing to work core, glutes, hamstrings, and calves for cardio + strength.